How do we know Jesus is the mediator between God and man?

The role of Jesus as the mediator is foundational to the Christian faith, as it encapsulates the belief that He represents humanity before God while also being fully divine. John writes in 1 John 1:2 about 'the word of life,' referring to the eternal Son of God, who was manifested to bring life and fellowship with the Father. The concept of mediation is further illustrated in 1 Timothy 2:5, which states, 'There is one God, and one mediator between God and men, the man Christ Jesus.' This highlights how Jesus, being both fully God and fully human, uniquely qualifies Him to reconciliate sinful man with a holy God. The necessity of a mediator arises from God's holiness, which cannot tolerate sin. Jesus’ sacrificial death and resurrection fulfill this need, providing the means through which believers can access the Father. Thus, His mediatorial work assures us of our standing in grace and facilitates our relationship with God.