What does the Bible say about Christ's sacrifice for sin?

The significance of Christ's sacrifice is intricately woven throughout Scripture, highlighting God's eternal plan for redemption. Hebrews 9:26 proclaims that Christ appeared 'once in the end of the world to put away sin by the sacrifice of himself.' His sacrificial death was not an afterthought but was ordained from the beginning, as Revelation 13:8 describes Him as the 'Lamb slain from the foundation of the world.' This underscores God's sovereign design in providing salvation for His elect, establishing that the cross was foreseen and necessary to fulfill God's righteous requirement against sin. By His sacrifice, Christ not only atoned for our sins but also restores our relationship with the Father.