Then fire came out from before Yahweh, and consumed the burnt offering and the fat upon the altar; and when all the people saw it they shouted and fell on their faces. Bible

“fire came out from before Yahweh.” This is God lighting the fire upon the altar of sacrifice in front of the Tent of Meeting. God initially lights the fire of the Tent of Meeting which Moses had just built, then the priests are never to let that fire go out. The perpetual fire on the altar is the fire of God.

Commentary for: Leviticus 9:24