And in that day ye shall ask me nothing. Verily, verily, I say unto you, Whatsoever ye shall ask the Father in my name, he will give it you. Hitherto have ye asked nothing in my name: ask, and ye shall receive, that your joy may be full.
Jesus was preparing His disciples for the time that He would no longer be with them physically. He wanted them to know that there would be a time when they would not be able to ask Him questions, but they could go directly to the Father. God the Father would answer their requests because of Jesus.