Throughout the Old Testament, which, is directly based on Judaism, there references to an Angel of the Lord. So, in answer to your question, it is a resounding yes.
Jehovah's Witnesses do precisely that. Their prayers go on and on and on and on....God may well be the Almighty, however, even the Almighty gets bored.
Basically, what Jesus is saying is, Get to the POINT!.
Ooh. I got all emotional there
As the Bible tells us: "He who spareth the rod hateth his son: but he that loveth him correcteth him betimes" (Proverbs 13:24) and "Withhold not correction from a child: for if thou strike him with the rod, he shall not die. Thou shalt beat him with the rod, and deliver his soul from hell."...