Exodus 33:18-20
33:18 And Moses said, “Show me your glory.”
33:19 And the Lord said, “I will make all my goodness pass before your face, and I will proclaim the Lord by name before you; I will be gracious to whom I will be gracious, I will show mercy to whom I will show mercy.”
33:20 But he added, “You cannot see my face, for no one can see me and live.”