So you also must consider yourselves dead to sin and alive to God in Christ Jesus. Romans 6:11
Jesus Christ reverses the relationship we had to life and death. In the past, sin was our lover and death our destiny. But Christ absorbed the abuse we deserved for sin and he became one with sin. 2 Corinthians 5:21 says that Jesus actually became sin.
For our sake he [the Father] made him [Jesus] to be sin who knew no sin, so that in him we might become the righteousness of God.
This is the great exchange that we call “salvation.” Jesus Christ became sin for us, we become righteous to God.
The greater understanding one has of his or her own sin, and the greater understanding one has of the holiness and perfect righteousness of God, the more shocking and mind-blowing this exchange becomes. This is, without question, the most baffling truth that the universe has ever witnessed.