And God said unto Moses,
I AM THAT I AM:
and he said,
Thus shall you say unto the children of Israel, I AM has sent me unto you.
All Commentaries on Exodus 3:14 Go To Exodus 3
Ambrose of Milan
AD 397
This is the God of Abraham, the God of Isaac, the God of Jacob, who appeared to Moses in the bush, concerning whom Moses says, “He who is has sent me.” It was not the Father who spoke to Moses in the bush, or in the desert, but the Son. .