How do we know that Jesus is our successful Savior?

The assurance of Christ being our successful Savior lies in the truth that He demonstrates His triumph over sin through His wounds. He doesn't merely offer a chance of salvation; He guarantees it through His finished work on the cross. The disciples' recognition of Him after His resurrection symbolizes this reality—He is the Lamb of God who takes away the sins of His people. His blood is the only means through which we can have peace with God, emphasizing that our salvation is not dependent on our deeds but solely on His grace and mercy.