The term "Great Exchange" is not a formal biblical phrase, but it is commonly used in theological discussions to refer to the profound biblical concept of substitutionary atonement, particularly in the context of salvation. This concept is rooted in passages such as 2 Corinthians 5:21, which states, "For our sake he made him to be sin who knew no sin, so that in him we might become the righteousness of God." In this exchange, Christ takes on the sins of humanity, suffering the penalty deserved for those sins, while believers receive His righteousness as a gift, thus reconciling them to God.This exchange emphasizes the grace and mercy of God, highlighting themes of redemption and justification found throughout the New Testament. In Romans 3:23-26, Paul elaborates on this idea by explaining how all have sinned and fall short of the glory of God, yet are justified freely by His grace through the redemption that came by Christ Jesus. This "Great Exchange" illustrates the core of the Gospel message, where sinners are transformed into righteous heirs of God's kingdom through faith in Jesus Christ.