John Wesley on Exodus 3:2

And the angel of the Lord appeared to him - It was an extraordinary manifestation of the divine glory; what was visible was produced by the ministry of an angel, but he heard God in it speaking to him. In a flame of fire - To shew that God was about to bring terror and destruction to his enemies, light and heat to his people, and to display his glory before all. And the bush burned, and yet was not consumed - An emblem of the church now in bondage in Egypt, burning in the brick - kilns, yet not consumed; cast down, but not destroyed.