What does the Bible say about substitution in relation to Abraham and Isaac?

In Genesis 22, Abraham's willingness to offer his son Isaac as a burnt offering serves as a powerful illustration of substitution within the broader context of the gospel. Abraham had faith that God could raise Isaac from the dead, which speaks to his understanding of the promise made to him—that all nations would be blessed through his seed, a direct reference to Christ as affirmatively stated in Galatians 3. This event symbolizes the ultimate sacrifice of Christ, the Lamb of God, who was provided by God Himself to bear the sins of many. Thus, the story not only showcases Abraham's faith but also prefigures God's redemptive plan through Jesus, underscoring the indispensable need for a substitute in atonement.