People of the Book, go not beyond the bounds in your religion, and say not as to God but the truth. The Messiah, Jesus son of Mary, was only the Messenger of God, and His Word that He committed to Mary, and a Spirit from Him (roohun minhu). So believe in God and His Messengers, and say not, ‘Three.’ Refrain; better is it for you. God is only One God. Glory be to Him — That He should have a son! To Him belongs all that is in the heavens and in the earth; God suffices for a guardian. S. 4:171
What does this nonsense mean? It sounds good but it does not make any sense. Mohammed evidently wanted to use words that he found in Christianity and embed them in to his own invented religion to make it more plausible and attractive to those who already used and believed in these concepts in the context of their own religion.