20 Phinehas the son of Eleazar was ruler over them in time past, and Yahweh was with him.
1 Chronicles 9:20 Cross References - WEB
Numbers 3:32
32 Eleazar the son of Aaron the priest shall be prince of the princes of the Levites, with the oversight of those who keep the requirements of the sanctuary.
Numbers 4:16
16 “The duty of Eleazar the son of Aaron the priest shall be the oil for the light, the sweet incense, the continual meal offering, and the anointing oil, the requirements of all the tabernacle, and of all that is in it, the sanctuary, and its furnishings.”
Numbers 4:28
28 This is the service of the families of the sons of the Gershonites in the Tent of Meeting. Their duty shall be under the hand of Ithamar the son of Aaron the priest.
Numbers 4:33
33 This is the service of the families of the sons of Merari, according to all their service in the Tent of Meeting, under the hand of Ithamar the son of Aaron the priest.”
Numbers 25:7-13
7 When Phinehas, the son of Eleazar, the son of Aaron the priest, saw it, he rose up from the middle of the congregation, and took a spear in his hand.
8 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 stopped among the children of Israel.
9 Those who died by the plague were twenty-four thousand.
10 Yahweh spoke to Moses, saying,
11 “Phinehas, the son of Eleazar, the son of Aaron the priest, has turned my wrath away from the children of Israel, in that he was jealous with my jealousy among them, so that I didn’t consume the children of Israel in my jealousy.
12 Therefore say, ‘Behold, I give to him my covenant of peace.
13 It shall be to him, and to his offspring after him, the covenant of an everlasting priesthood, because he was jealous for his God, and made atonement for the children of Israel.’”
Numbers 31:6
6 Moses sent them, one thousand of every tribe, to the war with Phinehas the son of Eleazar the priest, to the war, with the vessels of the sanctuary and the trumpets for the alarm in his hand.
1 Samuel 16:18
18 Then one of the young men answered, and said, “Behold, I have seen a son of Jesse the Bethlehemite who is skillful in playing, a mighty man of valor, a man of war, prudent in speech, and a handsome person; and Yahweh is with him.”