Two part healing
Mark 8:22 And he cometh to Bethsaida; and they bring a blind man unto him, and besought him to touch him.
Friends interceded for the blind man. We are to intercede for those who cannot help themselves.
Mark 8:23 And he took the blind man by the hand, and led him out of the town; and when he had spit on his eyes, and put his hands upon him, he asked him if he saw ought.
Anyone else spitting and it would be an insult, but not with Jesus who was all good. His spit brought healing. A snake can spit venom to cause blindness; Jesus came to destroy the power of the old serpent.
Mark 8:24 And he looked up, and said, I see men as trees, walking.
Jesus healed in many ways. God is a creative God. The source of healing was God, Jesus being the Son of God. The man was not yet completely healed.
Mark 8:25 After that he put his hands again upon his eyes, and made him look up: and he was restored, and saw every man clearly.
Jesus touched him again and he saw every man clearly. Sometimes Jesus heals in stages. We do not give up if we are not healed all at once, we do not lose hope.
Mark 8:26 And he sent him away to his house, saying, Neither go into the town, nor tell it to any in the town.
Go to your house, it was not yet time to go out and witness for Jesus. It was not yet time for Jesus to go to the cross because of the envious religious rulers. It was not yet time to die for our sins.