'He Who Sent Me' in the Bible

I did not yet know Him, but He who sent me to baptize in water said to me, "'The One on whom you see the Spirit coming down, and remaining, He it is who baptizes in the Holy Spirit.'

"Many things I have to speak and to judge concerning you. But He who sent me is true, and the things which I have heard from Him are those which I have come into the world to speak."

And He who sent me is with me. He has not left me alone: for I do always what is pleasing to Him."