When you accept Jesus as your Lord and savior, you become a completely new creation. You now have a new life; one you've been given by God. An exchange takes place the moment you accept Jesus's invitation to life: God's quid pro quo. Something for something: You give him your old life, and he gives you a new life.
In The Exchange, author Wayne Kniffen delves into the concept of exchange, helping you understand your new identity as a child of God. He discusses the idea that when you have a born-from-above experience with Christ, a spiritual transformation takes place on the inside. Your old nature is exchanged for a new nature. Because the transformation happens on the inside, it cannot be seen by physical eyes. But if there's been a spiritual transformation, there will be a physical manifestation. It will begin to manifest through your character and conduct.
The Exchange communicates complex spiritual truths in easy-to-understand ways, and Kniffen sprinkles examples and metaphors of spiritual truths about identity and the exchanged life throughout.