How do we know Jesus’ death paid for our sins?

The necessity of Christ's sacrifice is emphasized throughout Scripture, particularly in understanding sin's penalty. Jesus, being the perfect Lamb of God, took upon Himself the full wrath of God for sins that He did not commit (Isaiah 53:5). His suffering on the cross was vicarious, meaning He endured it on behalf of God’s elect. The atonement's efficacy is linked to His resurrection, showing that God accepted His sacrifice as payment for sins, confirming our justification (Romans 4:25). Thus, Jesus' death and resurrection are the foundation of salvation for all who believe.