O people of the Book, be not excessive in your Faith, and do not say about Allah anything but the truth. The Masih 'Isa, the son of Maryam, is only a Messenger of Allah, and His Word that He had delivered to Maryam, and a spirit from Him. So, believe in Allah and His Messengers. Do not say "Three". Stop it. That is good for you. Allah is the only One God. He is far too pure to have a son. To Him belongs what is in the heavens and what is in the earth. And Allah is enough to trust in.