'He Who Sent Me' in the Bible

I had no knowledge who he was, but he who sent me to give baptism with water said to me, The one on whom you see the Spirit coming down and resting, it is he who gives baptism with the Holy Spirit.

I have much to say about you and against you: but he who sent me is true and what he has said to me I say to the world.

He who sent me is with me; he has not gone from me, because at all times I do the things which are pleasing to him.