6 And behold, one of the people of Israel came and brought a Mid'ianite woman to his family, in the sight of Moses and in the sight of the whole congregation of the people of Israel, while they were weeping at the door of the tent of meeting. 7 When Phin'ehas the son of Elea'zar, son of Aaron the priest, saw it, he rose and left the congregation, and took a spear in his hand 8 and went after the man of Israel into the inner room, and pierced both of them, the man of Israel and the woman, through her body. Thus the plague was stayed from the people of Israel.
Matthew Henry's Commentary on Numbers 25:6-8
Commentary on Numbers 25:6-15
(Read Numbers 25:6-15)
Phinehas, in the courage of zeal and faith, executed vengeance on Zimri and Cozbi. This act can never be an example for private revenge, or religious persecution, or for irregular public vengeance.