You do not serve besides Him but names which you have named, you and your fathers; Allah has not sent down any authority for them; judgment is only Allah's; He has commanded that you shall not serve aught but Him; this is the right religion but most people do not know:

And the Shaitan shall say after the affair is decided: Surely Allah promised you the promise of truth, and I gave you promises, then failed to keep them to you, and I had no authority over you, except that I called you and you obeyed me, therefore do not blame me but blame yourselves: I cannot be your aider (now) nor can you be my aiders; surely I disbelieved in your associating me with Allah before; surely it is the unjust that shall have the painful punishment.