1. Testimonies about Jesus (31-40)
John the Baptist testified that Jesus is the Lamb of God who takes away the sin of the world! Jesus' work itself testified that he came from God and he is God; Who can change water into wine and raise the dead? The Father God himself testified about Jesus by revelation and by giving him his power. All the scriptures testified about Jesus as the suffering servant whose body will not decay but be exalted. This is tragedy, not to believe in Jesus about whom God, the Bible, his work and John testified!
2. You have no love of God (41-47)
Why does this tragic unbelief happen? It is because they have no love of God. They love man's recognition. They seek glory not from God but from one another. They put hope in Moses' law but Moses wrote about Jesus. What an irony it is not to come to Jesus!