accountability of disbelievers

فَٱتَّخَذْتُمُوهُمْ سِخْرِيًّا حَتَّىٰٓ أَنسَوْكُمْ ذِكْرِى وَكُنتُم مِّنْهُمْ تَضْحَكُونَ

But you took them in mockery to the point that they made you forget My remembrance, and you used to laugh at them.

قَالَ رَبِّ إِنَّ قَوْمِى كَذَّبُونِ

He said, "My Lord, indeed my people have denied me.