What does it mean that Jesus is our propitiation?

In Christian theology, Jesus as our propitiation refers to His role in appeasing the wrath of God against sin. This is evident in 1 John 2:2, which states, 'And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world.' The understanding here is that Christ took upon Himself the penalty for our sins, satisfying divine justice. As stated in Romans 3:26, God is both just and the justifier, which means that through Christ's sacrifice, we are reconciled to Him, and His wrath against sin is assuaged. Thus, in Christ, we find both mercy and righteousness.