The Early NT Church had major problems, and one major problem was how to respond to the Gentiles being converted. It seemed as if it was a completely different church. Was that needed for a different world outside of the the religious structures and knowledge of Israel?
John’s Gospel presents 7 signs of Jesus’ claim to Messiahship. The sixth sign that He does in healing a blind man is more than a miracle, but in placing His claim to being the Messiah. In that claim, He includes his disciples; and for us that means that is God expecting that we take His will as a must for our lives to present Him to the world.