Numbers 25:6-8, 14-15

And, behold, one of the children of Israel came and brought unto his brethren a Midianitish woman in the sight of Moses, and in the sight of all the congregation of the children of Israel, while they were weeping at the door of the tent of meeting. And when Phinehas, the son of Eleazar, the son of Aaron the priest, saw it, he rose up from the midst of the congregation, and took a spear in his hand; and he went after the man of Israel into the pavilion, and thrust both of them through, the man of Israel, and the woman through her body. So the plague was stayed from the children of Israel.

Now the name of the man of Israel that was slain, who was slain with the Midianitish woman, was Zimri, the son of Salu, a prince of a fathers’ house among the Simeonites. And the name of the Midianitish woman that was slain was Cozbi, the daughter of Zur; he was head of the people of a fathers’ house in Midian.