Numbers 25:6-9

6Moses and all the people were at the door of the Tent of Meeting. They were weeping. While they were there, an Israelite man brought a Midianite woman into his tent. Moses and all the people could see them.

7Phinehas, the son of Eleazar and grandson of Aaron the priest, saw what happened. So he stood up among all the people and he took a spear in his hand.

8He went into the man's tent. He pushed the spear through the body of the man and the Midianite woman. When he did that, the bad disease that was killing the Israelites stopped.

9But 24,000 people had already died as a result of the disease.