Contrast between material and divine reality

فَٱسْتَفْتِهِمْ أَهُمْ أَشَدُّ خَلْقًا أَم مَّنْ خَلَقْنَآ ۚ إِنَّا خَلَقْنَـٰهُم مِّن طِينٍ لَّازِبٍۭ

Then inquire of them, [O Muḥammad], "Are they a stronger [or more difficult] creation or those [others] We have created?" Indeed, We created them [i.e., men] from sticky clay.