Tafsir of Al-Anbiya' 21:25

{And We did not send before you any messenger except that We revealed to him that there is no deity except Me, so worship Me.}

{It is revealed} and {We reveal}: Both are well-known readings. This verse confirms the preceding verses regarding the doctrine of Tawhid (Oneness of God).

{And they say, "The Most Merciful has taken a son." Exalted is He! Rather, they are but honored servants. They cannot precede Him in speech, and they act by His command. He knows what is before them and what is behind them, and they cannot intercede except on behalf of one whom He approves. And they, from fear of Him, are apprehensive. And whoever of them should say, "Indeed, I am a god besides Him"—that one We would recompense with Hell. Thus do We recompense the wrongdoers.}