What is the meaning of Christ being the Lamb slain from the foundation of the world?

The phrase 'Lamb slain from the foundation of the world' indicates that God’s plan for redemption was established prior to the creation of the world, showing that Christ's role as Redeemer was not an afterthought but an essential part of God's eternal purpose. Revelation 13:8 connects this concept with the assurance that Christ’s sacrifice was predetermined to redeem the elect. As articulated throughout Scripture, including 1 Peter 1:19-20, this underscores the certainty and inevitability of redemption through Christ, reinforcing the belief that salvation is entirely God's work and not dependent on human action. Hence, it elevates the majesty of God's sovereign grace.