Human dependence on divine provision

وَسَخَّرَ لَكُمُ ٱلشَّمْسَ وَٱلْقَمَرَ دَآئِبَيْنِ ۖ وَسَخَّرَ لَكُمُ ٱلَّيْلَ وَٱلنَّهَارَ

And He subjected for you the sun and the moon, continuous [in orbit], and subjected for you the night and the day.