Dr. Mustafa Khattab, the Clear Quran - 36:6

Translation for 36:6

لِتُنذِرَ قَوۡمٗا مَّآ أُنذِرَ ءَابَآؤُهُمۡ فَهُمۡ غَٰفِلُونَ ٦
so that you may warn a people whose forefathers were not warned, and so are heedless.