What does the Bible say about the mystery of Christ revealed in us?

In Galatians 1:15-17, Paul speaks of a personal revelation of Christ within him, emphasizing that this experience is not merely intellectual but transformational. This inward revelation is understood as a manifestation of God's grace, reminding believers that their new birth is according to God's eternal purpose. It highlights that each individual must experience this revelation for true faith to flourish—it's not merely about knowing doctrinal truths but having a heart transformation where Christ is genuinely revealed in the soul.