Acts 7:30-32

7:30 “After forty years had passed, an angel appeared to him in the desert of Mount Sinai, in the flame of a burning bush. 7:31 When Moses saw it, he was amazed at the sight, and when he approached to investigate, there came the voice of the Lord, 7:32 ‘I am the God of your forefathers, the God of Abraham, Isaac, and Jacob.’ Moses began to tremble and did not dare to look more closely.

Acts 7:34-35

7:34 I have certainly seen the suffering of my people who are in Egypt and have heard their groaning, and I have come down to rescue them. Now come, I will send you to Egypt.’ 7:35 This same Moses they had rejected, saying, ‘Who made you a ruler and judge?’ God sent as both ruler and deliverer through the hand of the angel who appeared to him in the bush.

Acts 7:38

7:38 This is the man who was in the congregation in the wilderness with the angel who spoke to him at Mount Sinai, and with our ancestors, and he received living oracles to give to you.