How do we know Jesus's sacrifice is sufficient for salvation?

The sufficiency of Christ's sacrifice for salvation is established through God's promises in Scripture. Acts of the Old Testament, such as the Passover, foreshadowed the ultimate sacrifice that Jesus would fulfill. In Isaiah 55, it states, 'Come ye buy wine and milk without money and without price,' indicating that God has made a covenant with His people, securing our salvation through Christ. Additionally, Romans 8:32 emphasizes that God, having given us His Son, will graciously give us all things, confirming that Christ's atonement is more than enough for our redemption.