Numbers 16:46-49
46Moses said to Aaron, "Take your censer and fill it with incense, along with fire from the Altar. Get to the congregation as fast as you can: make atonement for them. Anger is pouring out from GOD-the plague has started!"
47Aaron grabbed the censer, as directed by Moses, and ran into the midst of the congregation. The plague had already begun. He put burning incense into the censer and atoned for the people.
48He stood there between the living and the dead and stopped the plague.
49Fourteen thousand seven hundred people died from the plague, not counting those who died in the affair of Korah.