Numbers 16:46-50

And Moses said to Aaron, “Quick, take an incense burner and place burning coals on it from the altar. Lay incense on it, and carry it out among the people to purify them and make them right with the LORD. The LORD’s anger is blazing against them—the plague has already begun.” Aaron did as Moses told him and ran out among the people. The plague had already begun to strike down the people, but Aaron burned the incense and purified the people. He stood between the dead and the living, and the plague stopped. But 14,700 people died in that plague, in addition to those who had died in the affair involving Korah. Then because the plague had stopped, Aaron returned to Moses at the entrance of the Tabernacle.