How do we know that Jesus is our everlasting surety?

The truth of Jesus being our everlasting surety is established in the covenant of grace, where He was appointed before the foundation of the world to redeem His people. As expressed in the sermon, Jesus states, 'I will be surety for them,' highlighting His commitment to bear their sins and ensure their salvation. Hebrews 7 discusses how the oath made by Jesus secures His role as the eternal High Priest, affirming that He is uniquely capable of performing this role. The satisfaction of God’s justice and the fulfillment of the law through Christ's sacrifice validates His position as our surety.