﴿ وَإِذَا مَآ أُنزِلَتْ سُورَةٌۭ نَّظَرَ بَعْضُهُمْ إِلَىٰ بَعْضٍ هَلْ يَرَىٰكُم مِّنْ أَحَدٍۢ ثُمَّ ٱنصَرَفُوا۟ ۚ صَرَفَ ٱللَّهُ قُلُوبَهُم بِأَنَّهُمْ قَوْمٌۭ لَّا يَفْقَهُونَ ﴾

“and whenever a surah is bestowed from on high, they look at one another [and say, as it were], "Is there anyone who can see what is in your hearts?" -and then they turn away. God has turned their hearts away [from the truth] - for they are people who will not grasp it.”

In verse 126: يُفْتَنُونَ فِي كُلِّ عَامٍ مَّرَّ‌ةً أَوْ مَرَّ‌تَيْنِ (they are put to trial every year once or twice), hypocrites have been warned about their incorrigible hypocrisy and constant breach of trust which brought all sorts of troubles for them every year once or twice. They saw the defeat of their disbelieving accomplices, the kuffar of Makkah. Then, they had to face the disgrace brought upon them when their hypocrisy was exposed. So, there was no dearth of warning signals for them. Incidentally, the count of ` once' or ` twice' here does not signify the numbers one and two as such. In fact, the purpose is to stress that this chain of action and reaction keeps moving all the time yet they take no lesson from what happens to them.