The Biology of Following

Dr. Robyn Kassas

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August 21, 2026

In this episode, Dr. Robyn Kassas and Dr. Nathan Kassas continue the fish gate series, teaching that God changes identity before He changes behavior. Following Peter's call in Matthew 4:19, they explain that discipleship means imitating Jesus, and that lasting change requires a new belief, not only new behavior. They share the idea of macro munching: choosing one small change and practicing it in three 21-day cycles so the brain rewires through neuroplasticity, likening it to chewing food before swallowing. They discuss rehearsing thoughts, the scrolling generation's expectation of instant change, and Romans 12:2-3, noting that you cannot have a new mind overnight. They also touch on the nervous system's stress response and Peter's impetuousness. Their encouragement is that one small consistent change can shift the wiring of the brain, and that the greatest miracle happened within Peter.