Exodus 33:20-23

33:20 But he added, “You cannot see my face, for no one can see me and live.” 33:21 The Lord said, “Here is a place by me; you will station yourself on a rock. 33:22 When my glory passes by, I will put you in a cleft in the rock and will cover you with my hand while I pass by. 33:23 Then I will take away my hand, and you will see my back, but my face must not be seen.”

Exodus 33:1

33:1 The Lord said to Moses, “Go up from here, you and the people whom you brought up out of the land of Egypt, to the land I promised on oath to Abraham, to Isaac, and to Jacob, saying, ‘I will give it to your descendants.’

Exodus 19:11

19:11 and be ready for the third day, for on the third day the Lord will come down on Mount Sinai in the sight of all the people.