How do we know Jesus Christ is our substitute for sin?

The sermon emphasizes that Jesus, as the appointed substitute for God's people, endured the full weight of God's wrath against sin. This is beautifully illustrated in the event of Shadrach, Meshach, and Abednego in the fiery furnace, where the fourth individual seen in the fire is likened to the Son of God. This represents Christ's presence with His people during suffering and judgment. As Paul states in Romans 5:9, we are justified by His blood and saved from the wrath to come. The theological foundation rests on the belief that through Christ's death, all the punishment due to us for our sins has been fully satisfied, providing complete salvation for those who are in Him.