Spiritual Growth

Jesus the Man: The Incarnation Still Living in Us

This blog post was inspired by an episode of First Love Radio with Dr. Robyn Kassas and Dr. Nathan Kassas. The ideas presented here are an expanded written reflection on themes discussed in the broadcast, integrating biblical theology, psychology, neuroscience, biology, and practical application to help readers understand what it means for Jesus to be fully God and fully man, and how His life continues to be expressed through believers today.


He Did Not Take Off His Humanity at the Resurrection

We have been rightly taught that Jesus is fully God. We sing it. We preach it. We build our theology on it. Yet, in our devotion to His divinity, we have often minimized an equally profound truth: Jesus is also fully man. Not merely was fully man. He is.

The Apostle Paul did not write to Timothy about a God who once visited. He wrote about a Mediator who remains: “For there is one God and one Mediator between God and men, the Man Christ Jesus” (1 Timothy 2:5, NKJV). Present tense. Ongoing office. Permanent nature.

The humanity of Jesus did not conclude at Calvary. It remains a living, continuous reality, directly influencing how He desires to work through you in the present.

What the Church Has Always Believed (And Why It Matters More Than You Think)

In A.D. 451, the Council of Chalcedon formally defined what believers had confessed since the first century: Jesus Christ is one person with two complete and distinct natures — fully divine and fully human — existing together without confusion, change, division, or separation (Council of Chalcedon, 451 A.D.). This doctrine is called the hypostatic union, from the Greek hypostasis, meaning "individual existence" or "subsistence" (Theopedia, n.d.).

The Chalcedonian Definition declared that the properties of each nature — the divine along with the human — are preserved, not dissolved, in the unity of one person. God the Son did not absorb humanity into His divinity like a drop of ink mixing into water. He took on humanity completely, and He kept it.

This is not a minor detail in systematic theology. Rather, it is the foundation upon which your prayer life, emotional well-being, and surrender to God depend.

“For in Him all the fullness of Deity dwells in bodily form.” — Colossians 2:9 (NASB)

To be fully God encompasses authority, sovereignty, eternal power, and divine nature. To be fully man encompasses emotion, embodiment, hunger, grief, compassion, and physiological experience. These attributes do not conflict; rather, they coexist in one glorified Person who, through the Holy Spirit, now desires to dwell within you.

What Man Was Always Meant to Be

Consider the following statement, which may challenge and reshape your understanding:

Jesus did not become less God by becoming fully man. He revealed what man was always meant to be — fully yielded to God in every emotion, every impulse, and every response.

The Incarnation is often described as God lowering Himself, as if taking on humanity was a temporary condescension or a costume worn for thirty-three years and then set aside. However, this perspective overlooks a deeper revelation. Jesus was not diminished by becoming human; rather, He demonstrated, in bodily form, the original design of humanity fully surrendered to God.

Adam was made in the image of God. He was designed to be a channel through which God’s nature — love, wisdom, righteousness, compassion — would be expressed in physical, embodied form. The Fall fractured that design. Emotion became dominated by fear. Impulse became divorced from the Father’s will. The body became a site of sin rather than a site of fused glory.

Then Jesus came. Not to demonstrate how God is different from man, but to demonstrate what man looks like when fully given back to God. Every emotion He felt was the Father’s emotion, expressed through a human body without distortion. Every act of compassion was God’s love made manifest through nerve endings and hands and a voice. Every moment of sorrow was grief that did not spiral into bitterness. Every act of righteous anger was justice that did not tip into cruelty.

He was no less God because He felt those things. He was showing us that feeling those things, without sin ruling them, is exactly what God-yielded humanity looks like.

This means transformation is never the erasure of your emotions; it is the surrender of them. You were not designed to feel less. You were designed to feel fully, with the Father remaining central throughout it all.

“I have come that they may have life, and that they may have it more abundantly.” — John 10:10 (NKJV)

Such abundance does not entail the absence of human experience; instead, it signifies human experience infused with divine life.

God Entered the Biology of Man

John did not say the Word became a concept, or a vision, or a spiritual presence. He said the Word became flesh (John 1:14). That word — sarx in Greek — means physical, biological, embodied human tissue.

Jesus had a nervous system. He had pain receptors, hormones, an immune response, breath, blood, and tears. When He wept at the tomb of Lazarus, His grief was not metaphorical. His lacrimal glands produced tears. His chest constricted, and His breathing changed. Grief, we now know, is not simply emotional — it is deeply physiological. Neuroscience confirms that the experience of loss activates distinct neurobiological mechanisms that alter emotional processing, cognitive function, and hormonal regulation, including marked fluctuations in cortisol and oxytocin (Statharakos, 2025).

Jesus experienced all of that — in a body.

The most dramatic medical evidence of His full humanity comes from Gethsemane. Luke — himself a physician (Colossians 4:14) — recorded with medical accuracy that Jesus’ sweat became “like great drops of blood falling to the ground” (Luke 22:44, NKJV). This is a rare but documented medical condition called hematidrosis, in which extreme emotional distress causes capillaries feeding the sweat glands to rupture, mixing blood with perspiration (Lumpkin, 1978; Allen, 1967). The most frequent documented causes are acute fear and intense mental contemplation (Holoubek & Holoubek, 1996).

Let that land. The Son of God, in His humanity, bore a stress response so profound that His body hemorrhaged through His skin. He did not bypass the biological reality of being human. He bore it — fully, without sin, without collapse.

“We do not have a High Priest who cannot sympathize with our weaknesses, but was in all points tempted as we are, yet without sin.” — Hebrews 4:15 (NKJV)

The word “sympathize” here is sympatheō in Greek — to suffer with, to feel alongside. This is not intellectual understanding. It is experiential solidarity. Jesus does not look at your suffering from a divine distance and comprehend it. He entered the same biological and emotional territory and knows it.

Emotion Moves Through the Body — And Jesus Proved It

Modern neuroscience has confirmed what scripture has always implied: emotion is not purely a psychological event. It is a whole-body experience.

Fear activates the amygdala, the brain’s alarm system, initiating the release of cortisol through the hypothalamic-pituitary-adrenal (HPA) axis (Shekhar et al., 2005). Grief disrupts breathing and heart rhythm, elevates cortisol, and alters epigenetic expression of stress-related genes (Statharakos, 2025). Compassion activates neural circuits associated with affiliation and reward — including oxytocin release and engagement of the medial orbitofrontal cortex — and shifts the nervous system from sympathetic fight-or-flight toward parasympathetic calm (Singer & Bolz, 2013; Klimecki & Singer, 2012).

Jesus moved through every one of these emotional spheres. He felt grief without despairing. He felt anger without hating. He felt the pressure of Gethsemane without rebelling against the Father’s will. His body bore the full weight of human emotion — and yet His spirit remained yielded.

This is not a minor detail; it constitutes the entire model for transformation.

Neuroscientists studying compassion have identified something striking: though related, empathy and compassion activate different neural networks. Empathizing with someone’s pain lights up the brain’s pain regions — the experiencer can become overwhelmed. But a shift to compassion activates regions linked with warmth, motivation, and caregiving — reducing personal distress while increasing the desire to help (Singer et al., 2004; Klimecki & Singer, 2012). Skillful empathy, researchers argue, requires the ability to move between resonance with suffering and the regulatory capacity not to be consumed by it (Mobley, as cited in National Academies of Sciences, Engineering, and Medicine, 2025).

Jesus was not consumed. He related to every dimension of human emotion, and He stayed anchored in the Father. That is not emotional suppression. That is the fullness of humanity redeemed — emotion present, but the Father central.

Christ in You — Not as Doctrine, But as Person

The Apostle Paul calls it “the mystery which has been hidden from ages and from generations, but now has been revealed to His saints” — and then he names it: “Christ in you, the hope of glory” (Colossians 1:26–27, NKJV).

Not Christ near you. Not Christ for you. Christ in you.

This changes the entire conversation about emotions. If Jesus is the Man who felt grief, anger, sorrow, tenderness, compassion, and pressure — and if that same Jesus now lives in you through the Holy Spirit — then your emotions are not just human territory. They are a potential territory for His expression.

Here is the hard question: What happens when you refuse to let Him into your grief? When you lock your disappointment away, perform a kind of spiritual stoicism, and present to God only the emotions you consider acceptable?

He not only desires to forgive your emotions; He seeks to inhabit them.

When you shut Jesus out of your sorrow, you are not protecting your faith. You are restricting His expression. Not because He is incomplete in Himself — He is eternally whole. But His expression through you becomes limited. You keep Him in the role of Savior to your soul, but you deny Him the role of indwelling Lord of your nervous system.

Co-Heirs, Not Spectators

Paul writes: “If children, then heirs — heirs of God and joint heirs with Christ” (Romans 8:17, NKJV).

Co-heirship is not a passive role. An heir does not simply receive an inheritance; rather, they participate in it, steward it, and share its responsibilities and honor with the one who grants it.

The relationship has two indispensable parts:

  1. He lives in us.
  2. We yield to Him.

Without yielding, there can be no true expression. The incarnation does not continue through believers who regard Christ solely as a doctrine to defend rather than as a Person to whom they surrender. The Father’s intention is that the Son would have a people through whom His humanity continues to reveal divine love: emotion expressed without the dominance of sin, and presence experienced without the need for performance.

This is what John described when he wrote that “as He is, so are we in this world” (1 John 4:17, NKJV). Not as He was — as He is. Present tense. The Man Christ Jesus, fully alive, fully human, fully God — expressing Himself through surrendered sons and daughters who have stopped managing their inner world and started opening it to Him.

He Chose to Need Us

Now we arrive at the revelation that is the hardest to hold — and the most glorious once you do.

Jesus is not incomplete in His divine nature. He is not incomplete in His atoning work. The cross is eternally sufficient. Nothing was left undone at Calvary. To suggest otherwise would be heresy.

But in His expression in the world — in His ongoing incarnational presence as Head, Bridegroom, and Body — Jesus has chosen a form of incompleteness that is not deficiency but covenant.

Paul writes in Ephesians 1:22–23 that the Father gave Christ “to be head over all things to the church, which is His body, the fullness of Him who fills all in all” (NKJV). The Greek word for fullness here is plērōma — a word that means completion, totality, that which fills up what is empty. Paul is saying that the Church — the body of yielded believers — is the plērōma of Christ. His completion. The thing that fills the room He has left.

This should serve as the theological foundation before proceeding further. This is not a mystical concept devised in a sermon; it is the language employed by Paul himself.

And it maps perfectly onto what Paul wrote earlier in the same letter about marriage:

“For this reason, a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh. This is a great mystery, but I speak concerning Christ and the church.” — Ephesians 5:31–32 (NKJV)

Paul spent all of Ephesians 5 drawing the marriage covenant as a picture — not just an illustration — of the relationship between Christ and the Church. A husband and wife are one flesh. Neither is complete in the fullness of that covenant without the other. Not because either is deficient as an individual, but because the covenant itself was designed to produce a union that neither carries alone.

Adam was complete as a man. And yet God said: “It is not good that man should be alone” (Genesis 2:18, NKJV). Not because Adam lacked personhood, but because the expression of what God placed in him required another. Eve did not complete Adam by patching a flaw. She completed him by becoming the recipient and reflection of what he carried — and bringing what only she could bring in return.

So it is with Christ and His Church.

Jesus, seated at the right hand of the Father in His glorified humanity, is not deficient. But He has chosen — in the mystery of covenant love — to have a people through whom His humanity continues to be expressed in the earth. He is the Head. We are the Body. And a head without a body is not yet expressing what it carries. Theologians studying Ephesians 1:23 have observed that just as Christ is essential to the universe, so the Church, as His mystical body, is essential to Him — not in order to add to His nature, but that its members here on earth might be the instruments of His ongoing purpose (Precious Seed, 1970).

This means that when you refuse to yield your grief to Him — when you lock your emotional life away from His indwelling — you are not protecting yourself from vulnerability. You are withholding from Him the very vessel whereby He intends to express His humanity in your generation.

He is Savior. He is Lord. He is the Head. He is the Bridegroom.

And a Bridegroom who has not yet been fully united to His bride is a Bridegroom still waiting for the fullness of what the covenant promises.

This perspective should offer profound encouragement regarding your emotional life. You are not a problem for Jesus to manage, nor a mess He merely tolerates. You are the body He inhabits, the bride for whom He is coming, and the vessel through which the Man Christ Jesus continues to reveal divine love in human form.

He is not incomplete because He is lacking. He is incomplete in His earthly expression because you have not yet fully yielded.

This is the invitation that remains before you.

🔑 Key Statements

These declarations are not mere slogans; they serve as anchors. Reflect on them and internalize their significance daily.

1. Jesus did not become less God by becoming fully man — He revealed what man was always meant to be when fully yielded to God in his emotions.

The Incarnation did not compromise divinity; rather, it demonstrated humanity’s original design. You were created to experience the full range of emotions, surrendered to God throughout.

2. If Jesus cannot express through your emotions, He is Savior to your soul, but not yet Lord of your nervous system.

Salvation opens the door, while surrender allows Him full access. The objective is not merely a forgiven heart, but a life fully inhabited by Christ.

3. Jesus felt everything man feels, but He never let feeling overthrow the Father’s will.

This is the model, not the exception. He did not suppress. He did not perform. He felt — and remained yielded. That is what He is after in you.

4. The incarnation is not only what Jesus did once — it is what He continues to express through every yielded son and daughter.

History did not conclude the Incarnation; rather, the Ascension transferred its expression. Now, it continues through you, or awaits your surrender.

5. Christ in you is not a doctrine to quote — it is a Person longing to live through your body, your emotions, and your choices.

Doctrine provides information, while surrender brings transformation. Christ does not seek individuals who can merely explain Him accurately, but those through whom He can work fully.

6. Jesus is physically incomplete in His earthly expression when you do not live His life through your life.

This is not an accusation, but an invitation. Christ chose to need the Body and the Bride. He is not waiting for your perfection; He is waiting for your willingness.

7. As Adam was not complete in the full expression of covenant without Eve, so Christ — in the mystery of His union with the Church — is not yet fully expressed without us.

This is the profound mystery Paul described in Ephesians 5. It is not a flaw in God, but a feature of divine love. God designed union and completion through covenant, and you are included in this purpose.

A Closing Word

Jesus is fully God, possessing authority, and fully man, possessing empathy. As God, He rules; as man, He relates. He now lives within us, not as a concept to be managed, but as the ongoing expression of divine humanity.

The incarnation did not end when He rose. It did not end when He ascended. It is still happening — in every believer who stops constricting Him flowing through and starts yielding to Him.

Let Him into your grief. Let Him into your anger. Let Him into your fear, your tenderness, your disappointment. That is not a weakness or a crutch-like lifestyle. That is abiding, the great exchange through interchange —and that is the point. When you do, you will allow Jesus Christ, the man, to fill your man, and your life will be laid down and His life taken up (John 10:18). And when you live His life, you will live in abundant life!

“I am the door. If anyone enters by Me, he will be saved, and will go in and out and find pasture. The thief does not come except to steal, and to kill, and to destroy. I have come that they may have life, and that they may have it more abundantly.” —John 10:10 (NKJV)

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References

Allen, A. C. (1967). The skin: A clinicopathological treatise (2nd ed.). Grune and Stratton.

Council of Chalcedon. (451 A.D.). The Chalcedonian Definition. In P. Schaff (Ed.), Nicene and post-Nicene fathers (Vol. 14). Christian Literature Publishing.

Holoubek, J. E., & Holoubek, A. B. (1996). Blood, sweat, and fear: A classification of hematidrosis. Journal of Medicine, 27(3–4), 115–133.

Klimecki, O. M., & Singer, T. (2012). Empathic distress fatigue rather than compassion fatigue? Integrating findings from empathy research in psychology and social neuroscience. In B. Oakley, A. Knafo, G. Madhavan, & D. S. Wilson (Eds.), Pathological altruism (pp. 368–383). Oxford University Press.

Lumpkin, R. (1978). The physical suffering of Christ. Journal of the Medical Association of Alabama, 47, 8–10.

National Academies of Sciences, Engineering, and Medicine. (2025). Unraveling the neurobiology of empathy and compassion: Implications for treatments for brain disorders and human well-being. National Academies Press. https://www.ncbi.nlm.nih.gov/books/NBK618373/

Precious Seed. (1970). The church the fullness of Christ. Precious Seed International. https://www.preciousseed.org/articles/the-church-the-fulness-of-christ/

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Singer, T., & Bolz, M. (Eds.). (2013). Compassion: Bridging practice and science. Max Planck Society.

Singer, T., Seymour, B., O’Doherty, J., Kaube, H., Dolan, R. J., & Frith, C. D. (2004). Empathy for pain involves the affective but not sensory components of pain. Science, 303(5661), 1157–1162. https://doi.org/10.1126/science.1093535

Statharakos, N. (2025). Unraveling the neurobiology of grief: Insights into brain and behavior — narrative review. Brain Science Advances. https://doi.org/10.26599/BSA.2025.905001

Theopedia. (n.d.). Two natures of Jesus. Retrieved May 11, 2026, from https://theopedia.com/hypostatic-union