Exodus 3:2,3
And the angel of the LORD appeared to him in a flame of fire out of the middle of a bush: and he looked, and, behold, the bush burned with fire, and the bush was not consumed.
Torrey's Topical Textbook—AKJV

Acts 7:30-32
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.
Torrey's Topical Textbook—AKJV