John 1.4-5 Jesus is the one who perfectly and completely reveals God to us. How Can I Know God At All? John makes it clear that Jesus is the One God uses to reveal Himself. The Scriptures come from God and tell us all we need to know about God. Jesus is God in the flesh, who died for our sin and was raised for our salvation. Jesus is the ultimate and final revelation of God to man. What Can I Know For Sure? Jesus is the Revelation. Jesus is the Authority. Jesus is Authentic.