The angel of the Lord - See the note at Genesis 12:7. What Moses saw was the flame of fire in the bush; what he recognized therein was an intimation of the presence of God, who maketh a flame of fire His angel. Compare Psalms 104:4. The words which Moses heard were those of God Himself, as all ancient and most modern divines have held, manifested in the Person of the Son.
Of a bush - Literally, of the bush or “seneh,” a word which ought perhaps to be retained as the proper name of a thorny shrub common in that district, a species of acacia.