Exodus 3:4

3:4 When the Lord saw that he had turned aside to look, God called to him from within the bush and said, “Moses, Moses!” And Moses said, “Here I am.”

Exodus 34:35

34:35 When the Israelites would see the face of Moses, that the skin of Moses’ face shone, Moses would put the veil on his face again, until he went in to speak with the Lord.