Numbers 16:46-49

46And Moses said to Aaron, Take the censer, and put fire thereon from off the altar, and lay on incense, and carry it quickly to the assembly, and make atonement for them; for there is wrath gone out from Jehovah: the plague is begun.

47And Aaron took as Moses had said, and ran into the midst of the congregation; and behold, the plague had begun among the people; and he put on incense, and made atonement for the people.

48And he stood between the dead and the living; and the plague was stayed.

49Now they that died in the plague were fourteen thousand seven hundred, besides them that had died because of the matter of Korah.