Ingratitude and disbelief (kufr)

۞ أَلَمْ تَرَ إِلَى ٱلَّذِينَ بَدَّلُوا۟ نِعْمَتَ ٱللَّهِ كُفْرًا وَأَحَلُّوا۟ قَوْمَهُمْ دَارَ ٱلْبَوَارِ

Have you not considered those who exchanged the favor of Allāh for disbelief and settled their people [in] the home of ruin?

أَمْ أَمِنتُمْ أَن يُعِيدَكُمْ فِيهِ تَارَةً أُخْرَىٰ فَيُرْسِلَ عَلَيْكُمْ قَاصِفًا مِّنَ ٱلرِّيحِ فَيُغْرِقَكُم بِمَا كَفَرْتُمْ ۙ ثُمَّ لَا تَجِدُوا۟ لَكُمْ عَلَيْنَا بِهِۦ تَبِيعًا

Or do you feel secure that He will not send you back into it [i.e., the sea] another time and send upon you a hurricane of wind and drown you for what you denied? Then you would not find for yourselves against Us an avenger.