Numbers 25:6-10

Then behold, one of the sons of Israel came and brought to his relatives a Midianite woman, in the sight of Moses and in the sight of the whole congregation of the sons of Israel, while they were weeping at the entrance of the tent of meeting.

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 inner room of the tent and pierced both of them, the man of Israel and the woman, through the abdomen. So the plague on the sons of Israel was brought to a halt.

But those who died from the plague were twenty-four thousand in number. The Zeal of Phinehas

Then the Lord spoke to Moses, saying,