Quran 28:46

وَمَا كُنتَ بِجَانِبِ ٱلطُّورِ إِذۡ نَادَيۡنَا وَلَـٰكِن رَّحۡمَةً۬ مِّن رَبِّكَ لِتُنذِرَ قَوۡمً۬ا مَّآ أَتَٮٰهُم مِّن نَّذِيرٍ۬ مِّن قَبۡلِكَ لَعَلَّهُمۡ يَتَذَڪَّرُونَ ٤٦

Nor were you on the slope of Mount Sinai when we called (Moses). But it is mercy from your Lord, (towards the people,) in order to warn people who received no warner before you, that they may take heed.