Quran 21:56 — The Prophets (Al-Anbya')

قالَ بَل رَبُّكُم رَبُّ السَّمٰوٰتِ وَالأَرضِ الَّذى فَطَرَهُنَّ وَأَنا۠ عَلىٰ ذٰلِكُم مِنَ الشّٰهِدينَ

He said, "Your only Lord is the Lord of the heavens and the earth, who created them. This is the testimony to which I bear witness.

[21:55] They said, "Are you telling us the truth, or are you playing?"

[21:57] "I swear by GOD, I have a plan to deal with your statues, as soon as you leave."