Qur'an 36:6 · Yaseen

لِتُنذِرَ قَوْمًۭا مَّآ أُنذِرَ ءَابَآؤُهُمْ فَهُمْ غَٰفِلُونَ

(6) That you may warn a people whose forefathers were not warned, so they are unaware.