Quran 18:14 — The Cave (Al-Kahf)

We strengthened their hearts when they stood up and proclaimed: "Our only Lord is the Lord of the heavens and the earth. We will never worship any other god beside Him. Otherwise, we would be far astray.

[18:13] We narrate to you their history, truthfully. They were youths who believed in their Lord, and we increased their guidance.

[18:15] "Here are our people setting up gods beside Him. If only they could provide any proof to support their stand! Who is more evil than the one who fabricates lies and attributes them to GOD?