Who spoke from the burning bush to Moses?
The voice from the burning bush was God, but the person of the Godhead actually communicating and present there was Jehovah, God the Son. He spoke to Moses at Mount Sinai from the bush that burned yet was not consumed.
Les teaches from Exodus chapter 3 that Moses came to Mount Sinai, saw the burning bush, and drew aside because it was not consumed. As he approached, God spoke out of the bush. Les explains that while it is God, the person of the Godhead who is communicating and actually there in the burning bush is Jehovah, or God the Son. Les says he will prove this further.