Leviticus 9:22-24

Then Aaron lifted up his hands toward the people and blessed them, and he stepped down after making the sin offering and the burnt offering and the peace offerings. Moses and Aaron went into the tent of meeting. When they came out and blessed the people, the glory of the LORD appeared to all the people. Then fire came out from before the LORD and consumed the burnt offering and the portions of fat on the altar; and when all the people saw it, they shouted and fell on their faces.