How do we know Jesus is suitable as our Savior?

Jesus' suitability arises from His identity as the Son of God, which is essential for Him to act as our mediator and substitute before God. John emphasizes this through his gospel, asserting that Jesus was not only with God but was God Himself, affirming His deity. His divine nature allows Him to fulfill the requirements of atonement, offering His life as a perfect sacrifice for our sins. This perfect union of divinity and humanity in one person uniquely qualifies Jesus to be the Savior whom God alone would accept.