Numbers 25:7

25:7 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,

Numbers 25:11-13

25:11 “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. 25:12 Therefore, announce: ‘I am going to give to him my covenant of peace. 25:13 So it will be to him and his descendants after him a covenant of a permanent priesthood, because he has been zealous for his God, and has made atonement for the Israelites.’”