The Prophets - 21:24
"Have they taken gods besides Him? Say, "Bring your proof. This is the message of my contemporaries and the message of those before me."But most of them turn away because they do not know the truth."
The truth:
The Pilgrimage/22:6
For Allah is the only Truth; He raises the dead; He is all-powerful;
Luqman/31:30
For Allah is the Truth, and what they call besides Him is falsehood, and Allah is the Most High and the Greatest.
The Pilgrimage/22:62
This will come to pass. Because Allah is the Truth, and those whom they invoke besides Him are false, and Allah is the Exalted, the Great.
The Night Journey/17:2
"In the same way, We gave Moses the Book. to guide the Children of Israel to the truth: "Do not take any other guardian besides Me."
Prophet Abraham/14:52
This is a warning to the people. That they may listen to this warning and know that He is the only God, and that those who have understanding may take counsel.