Quran 9:65 — Ultimatum (Bara'ah)

وَلَئِن سَأَلتَهُم لَيَقولُنَّ إِنَّما كُنّا نَخوضُ وَنَلعَبُ ۚ قُل أَبِاللَّهِ وَءايٰتِهِ وَرَسولِهِ كُنتُم تَستَهزِءونَ

If you ask them, they would say, "We were only mocking and kidding." Say, "Do you realize that you are mocking GOD, and His revelations, and His messenger?"

[9:64] The hypocrites worry that a sura may be revealed exposing what is inside their hearts. Say, "Go ahead and mock. GOD will expose exactly what you are afraid of."

[9:66] Do not apologize. You have disbelieved after having believed. If we pardon some of you, we will punish others among you, as a consequence of their wickedness.