Exodus 3

3 Now Moses was tending the flock of Jethro his father-in-law, the priest of Midian, and he led the flock to the far side of the wilderness and came to Horeb,the mountain of God. 2 There the angel of the Lord appeared to him in flames of fire from within a bush. Moses saw that though the bush was on fire it did not burn up. 3 So Moses thought, “I will go over and see this strange sight—why the bush does not burn up.”

4 When the Lord saw that he had gone over to look, God called to him from within the bush, “Moses! Moses!”

And Moses said, “Here I am.”