Numbers 25:2-7

²for the Moabites had invited the people to the sacrifices to their gods. So the people ate and bowed down to Moabite gods.

³The men of Israel joined in worshiping Baal of Peor, and Yahweh's anger was kindled against Israel.

⁴Yahweh said to Moses, “Kill all the leaders of the people and hang them up before me to expose them in the daylight, so that my fierce anger may turn away from Israel.”

⁵So Moses said to Israel's leaders, “Each of you must execute his people who have joined in worshiping Baal of Peor.”

⁶Then one of the men of Israel came and brought among his family members a Midianite woman. This happened in the sight of Moses and all the community of the people of Israel, while they were weeping at the entrance to the tent of meeting.

⁷When Phinehas son of Eleazar son of Aaron the priest, saw that, he rose up from among the community and took a spear in his hand.