Exodus 33:20

17 And the Lord said to Moses, I will do as you say: for you have grace in my eyes, and I have knowledge of you by your name.

18 And Moses said, O Lord, let me see your glory.

19 And he said, I will make all the light of my being come before you, and will make clear to you what I am; I will be kind to those to whom I will be kind, and have mercy on those on whom I will have mercy.

20 But it is not possible for you to see my face, for no man may see me and still go on living.

21 And the Lord said, See, there is a place near me, and you may take your place on the rock:

22 And when my glory goes by, I will put you in a hole in the rock, covering you with my hand till I have gone past:

23 Then I will take away my hand, and you will see my back: but my face is not to be seen.