﴿ وَلَوْلَا كَلِمَةٌۭ سَبَقَتْ مِن رَّبِّكَ لَكَانَ لِزَامًۭا وَأَجَلٌۭ مُّسَمًّۭى ﴾

“Now were it not for a decree that has already gone forth from thy Sustainer, setting a term [for each sinner's repentance], it would inescapably follow [that all who sin must be doomed at once].”

Please check ayah 20:130 for complete tafsir.