How do we know Jesus's sacrifice was for our sins?

The concept of Jesus's sacrifice being for our sins is deeply rooted in Scripture, particularly seen in Isaiah 53. Here, it is explicitly stated that He was wounded for our transgressions and bruised for our iniquities. This language indicates that His suffering was not due to any wrongdoing on His part but was instead a sacrificial act meant to atone for the sins of His people. The Lord laid on Him the iniquity of us all, making it clear that the purpose of His suffering was a divine example of substitution. Thus, His death on the cross is the fulfillment of God's plan for redemption, underscoring that it was not a chance event but a predetermined act of grace.