Why is the concept of the Lamb slain from the foundation of the world important for Christians?

The phrase 'the Lamb slain from the foundation of the world' reveals the eternal nature of God's redemptive plan and the sufficiency of Christ's sacrifice. According to Revelation 13:8, this declaration emphasizes that the salvation of the elect was secured before the world began, highlighting the depth of God's grace. This assurance comforts believers that their salvation is not contingent on their efforts, but on the finished work of Christ. It establishes a foundation for understanding God's sovereignty and causes Christians to respond in gratitude for the grace bestowed upon them.