(25:10) Pinchas, son of Elazar and grandson of Aaron the priest, was the one who zealously took up My cause among the Israelites and turned My anger away from them, so that I did not destroy them in My vengeance.
Pinchas, son of Elazar and grandson of Aaron Why does the Torah point out that Pinchas was Aaron's grandson? After Pinchas avenged God by killing Zimri, the other tribes vilified him, accusing him of wanton murder, saying, “Look at this descendant of Jethro who sacrificed calves for idol worship, and he went and killed Zimri, a leader of the tribe of Simon.” The Torah, therefore, went out of its way to specify Pinchas's descent, “Pinchas, son of Elazar and grandson of Aaron the priest” and Aaron was the epitome of “a lover of peace” (Sanhedrin 82b).
NOTE: Pinchas's maternal grandfather was Jethro, a Midianite priest.
(25:13) This shall be for him and his descendants a covenant of eternal priesthood. It is given to him because he zealously took up God's cause and made atonement for the children of Israel.