﴿ أَوْ تَقُولَ حِينَ تَرَى ٱلْعَذَابَ لَوْ أَنَّ لِى كَرَّةًۭ فَأَكُونَ مِنَ ٱلْمُحْسِنِينَ ﴾

“or lest he should say, when he becomes aware of the suffering [that awaits him], “Would that I had a second chance [in life], so that I could be among the doers of good!””

Please check ayah 39:59 for complete tafsir.