Acts of the Apostles 7:30-34

“Forty years later, in the desert near Mount Sinai, an angel appeared to Moses in the flame of a burning bush. When Moses saw it, he was amazed at the sight. As he went to take a closer look, the voice of the LORD called out to him, ‘I am the God of your ancestors—the God of Abraham, Isaac, and Jacob.’ Moses shook with terror and did not dare to look. “Then the LORD said to him, ‘Take off your sandals, for you are standing on holy ground. I have certainly seen the oppression of my people in Egypt. I have heard their groans and have come down to rescue them. Now go, for I am sending you back to Egypt.’