Exodus 3:5-6

5“Do not come any closer,” God said. “Take off your sandals, for the place where you are standing is holy ground.”

6Then he said, “I am the God of your father, Masoretic Text; Samaritan Pentateuch (see Acts 7:32) fathers the God of Abraham, the God of Isaac and the God of Jacob.” At this, Moses hid his face, because he was afraid to look at God.