Why is it that some days we feel strong in faith and other days we struggle with doubt, fear, or restlessness? The answer may lie not only in our spiritual practices but also in the chemistry of our brains. Modern science has shown that brain chemicals such as dopamine, serotonin, and cortisol shape how we think and feel. At the same time, scripture reminds us that our thoughts influence our spiritual life. When these two insights come together, as John Lisio explores in Truth Crafted Truth Absolute, we see that brain chemistry and spiritual growth are more connected than we might imagine.
Dopamine is often called the reward chemical. It gives us a sense of accomplishment and motivation. Spiritually, it can explain why moments of answered prayer, acts of service, or worship feel so uplifting. When we set aside time to notice God’s presence and act on His Word, dopamine reinforces the experience, making it easier to return to those habits. However, when people chase dopamine through unhealthy ways, like social approval or material gain, the sense of satisfaction quickly fades. Lisio’s book encourages readers to track these patterns in a Thought Journal and redirect them toward truths fixed in scripture, ensuring that joy and motivation come from the right source.
Serotonin, sometimes called the calm confidence chemical, plays a key role in stability and peace of mind. Faith-driven practices such as prayer, gratitude, and worship naturally release serotonin, allowing us to feel grounded in God’s presence. A person reflecting on Psalm 23, The Lord is my shepherd, I lack nothing, may notice not only spiritual comfort but also a sense of mental calm. Lisio points out that over time, these repeated thoughts literally rewire the brain, a process known as neuroplasticity. By aligning daily thoughts with biblical truths, believers can cultivate resilience and confidence rooted in faith.
Cortisol, on the other hand, is the stress chemical. It is useful in small amounts, helping us react to danger, but when it dominates our thought life, it can lead to anxiety, fear, and disconnection. Spiritually, high levels of cortisol often reinforce lies like “I’m not enough” or “God has abandoned me.” Truth Crafted Truth Absolute offers practical exercises, such as the Truth-Crafting Matrix, that guide readers in identifying these harmful thoughts and replacing them with scriptural anchors. By doing so, the stress response is calmed, and peace takes its place.
The most important insight from Lisio’s work is that spiritual growth is not separate from mental and physical processes. Instead, the two work together. Faith shapes thoughts, thoughts shape chemistry, and chemistry influences the experience of faith.
This link between brain chemistry and spiritual growth shows us why transformation requires both intention and faith. By committing to the 21-day journey in Truth Crafted Truth Absolute, readers learn how to notice destructive patterns, shift their focus, and anchor their lives in God’s unchanging truth.
For anyone seeking to grow in faith while also understanding how the mind works, John Lisio’s book provides a thoughtful and practical guide. It reminds us that the renewal of the mind, promised in scripture, is not only a spiritual process but also a biological reality.
Read this book now, available on Amazon: https://www.amazon.com/dp/B0FGKS935H?.
