1. Unbelievers and secret believers (37-43)
Though Jesus performed many miracles, revealing his identity as the Messiah, people refused to believe in him. This fulfilled Isaiah 53:1 - those to whom God's arm was revealed, were also those who did not believe. Their eyes were blinded and their hearts hardened to Christ. Many Jewish leaders believed in Jesus, but they would not openly say so. They were afraid of the social ramifications. They loved praise from men more than praise from God.
2. See God through Christ (44-50)
When we believe in Jesus, we also believe in God the Father who sent him. We see God through Christ. Jesus does not want to leave us in spiritual darkness. Jesus did not speak on his own but only what his Father told him to say. Jesus' word leads to eternal life when we accept them. Those who hear Jesus' words but do not keep them are not immediately judged. God the Father will judge them on the last day.