Numbers 25:3-7

³And Israel was joined unto Baala Pheor, and the anger of the Lord was kindled against Israel.

⁴And the Lord said unto Mosheh: Take all the chiefs of the people, and judge, and slay him who is guilty of death before the Lord, over against the sun, that the fierce anger of the Lord may be turned away from Israel.

⁵And Mosheh said to the judges of Israel: Slay every man his men who have joined themselves to Baala Pheor.

⁶And, behold, a man of the sons of Israel came and brought to his brethren a Midianitha, in the eyes of Mosheh, and in the eyes of all the congregation of the children of Israel, who were weeping at the door of the tabernacle of ordinance.

⁷And Phinehas bar Elazar bar Aharon the priest saw, and arose from the midst of the congregation, and took a lance in his hand;