For the LORD your God is a consuming fire, even a jealous God.
All Commentaries on Deuteronomy 4:24 Go To Deuteronomy 4
Ambrose of Milan
AD 397
So the prophets called him a burning fire, because in those three points we see more intensely the majesty of the Godhead. Since to sanctify is of the Godhead, to illuminate is the property of fire and light, and the Godhead is frequently pointed out or seen in the appearance of fire: “For our God is a consuming fire,” as Moses said. .