How do we know Christ is our substitute?

The doctrine of substitutionary atonement is central to understanding the role of Christ in salvation. As articulated in the sermon, the statement 'whatsoever they did, he was the doer of it' encapsulates the essence of Christ's redemptive work. This highlights the mystery of the gospel, where Christ takes upon Himself the sins of the elect. The Scriptures, particularly in 2 Corinthians 5:21, state that God made Christ to be sin for us, even though He was sinless. Thus, when Jesus was punished, it was as if our sins were placed upon Him, satisfying divine justice while allowing believers to be justified before God. This understanding reassures us that in Christ, all the requirements for salvation are fulfilled, validating His role as our substitute.