Acts 7:29-32
English Standard Version
30"Now when forty years had passed, an angel appeared to him in the wilderness of Mount Sinai, in a flame of fire in a bush.
31When Moses saw it, he was amazed at the sight, and as he drew near to look, there came the voice of the Lord:
32‘I am the God of your fathers, the God of Abraham and of Isaac and of Jacob.’ And Moses trembled and did not dare to look.