Acts 7:30 in the King James Version
And when forty years were expired, there appeared to him in the wilderness of mount Sina an angel of the Lord in a flame of fire in a bush.
Context
29 Moses fled at this saying, and became a stranger in the land of Midian, where he became the father of two sons.
30 “When forty years were fulfilled, an angel of the Lord appeared to him in the wilderness of Mount Sinai, in a flame of fire in a bush.
31 When Moses saw it, he wondered at the sight. As he came close to see, the voice of the Lord came to him,