Jesus Christ died in our place when He was crucified on the cross. We deserved to be the ones placed on that cross to die because we are the ones who live sinful lives. But Christ took the punishment on Himself in our place—He substituted Himself for us and took what we rightly deserved. “God made him who had no sin to be sin for us, so that in him we might become the righteousness of God” (2 Corinthians 5:21).
“He himself bore our sins in his body on the tree, so that we might die to sins and live for righteousness; by his wounds you have been healed” (1 Peter 2:24). Here again we see that Christ took the sins we committed onto Himself to pay the price for us. A few verses later we read, “For Christ died for sins once for all, the righteous for the unrighteous, to bring you to God. He was put to death in the body but made alive by the Spirit” (1 Peter 3:18). Not only do these verses teach us about the substitute that Christ was for us, but also that he was the atonement, meaning He satisfied the payment due for the sinfulness of man.
One more passage that talks about the substitutionary atonement is Isaiah 53:5. This verse talks about the coming Christ who was to die on the cross for our sins; it is very detailed and the crucifixion happened just as it was foretold. Notice the words as you read it. “But he was pierced for our transgressions, he was crushed for our iniquities; the punishment that brought us peace was upon him, and by his wounds we are healed.” Notice the substitution. Here again we see that Christ paid the price for us!
We can only pay the price of sin on our own by being punished and placed in hell for all eternity. But God’s Son, Jesus Christ, came to earth to pay for the price of our sins. Because He did this for us, we now have the opportunity to not only have our sins forgiven, but to spend eternity with Him. In order to do this we must place our faith in what Christ did on the cross. We cannot save ourselves; we need a substitute to take our place.