Exodus 33:17-20

17And Yhwh said unto Moses, I will do this thing also that thou hast spoken: for thou hast found grace in my sight, and I know thee by name.

18And he said, I beseech thee, shew me thy glory.

19And he said, I will make all my goodness pass before thee, and I will proclaim the name of Yhwh before thee; and will be gracious to whom I will be gracious, and will shew mercy on whom I will shew mercy.

20And he said, Thou canst not see my face: for there shall no man see me, and live.