Numbers 25:2-7

²For they sent for the people to be present at the offerings made to their gods; and the people took part in their feasts and gave honour to their gods.

³So Israel had relations with the women of Moab in honour of the Baal of Peor: and the Lord was moved to wrath against Israel.

⁴Then the Lord said to Moses, Take all the chiefs of the people, hanging them up in the sun before the Lord, so that the wrath of the Lord may be turned from Israel.

⁵So Moses said to the judges of Israel, Let everyone put to death those of his men who have had relations with the women of Moab in honour of the Baal of Peor.

⁶Then one of the children of Israel came to his brothers, taking with him a woman of Midian, before the eyes of Moses and all the meeting of the people, while they were weeping at the door of the Tent of meeting.

⁷And Phinehas, the son of Eleazar, the son of Aaron the priest, seeing it, got up from among the people and took a spear in his hand,