Numbers 25:5, 7-12

So Moses said to the judges of Israel, “Each of you must execute those of his men who were joined to Baal-peor.”

When Phinehas son of Eleazar, the son of Aaron the priest, saw it, he got up from among the assembly, took a javelin in his hand, and went after the Israelite man into the tent and thrust through the Israelite man and into the woman’s abdomen. So the plague was stopped from the Israelites. Those that died in the plague were 24,000. The LORD spoke to Moses: “Phinehas son of Eleazar, the son of Aaron the priest, has turned my anger away from the Israelites, when he manifested such zeal for my sake among them, so that I did not consume the Israelites in my zeal. Therefore, announce: ‘I am going to give to him my covenant of peace.