Bamidbar / Numbers
Numbers 25:7-13
Pinchas kills Zimri and Kozbi in an act of zealotry (kina'ut) that God praises and rewards with a covenant of eternal priesthood — the Torah's paradigmatic case of extrajudicial killing of a sinner performed by a zealot, which later sources apply to cases of public heresy and desecration.
וַיַּ֗רְא פִּֽינְחָס֙ בֶּן־אֶלְעָזָ֔ר בֶּֽן־אַהֲרֹ֖ן הַכֹּהֵ֑ן וַיָּ֙קׇם֙ מִתּ֣וֹךְ הָֽעֵדָ֔ה וַיִּקַּ֥ח רֹ֖מַח בְּיָדֽוֹ׃ וַ֠יָּבֹ֠א אַחַ֨ר אִֽישׁ־יִשְׂרָאֵ֜ל אֶל־הַקֻּבָּ֗ה וַיִּדְקֹר֙ אֶת־שְׁנֵיהֶ֔ם אֵ֚ת אִ֣ישׁ יִשְׂרָאֵ֔ל וְאֶת־הָאִשָּׁ֖ה אֶל־קֳבָתָ֑הּ וַתֵּֽעָצַר֙ הַמַּגֵּפָ֔ה מֵעַ֖ל בְּנֵ֥י יִשְׂרָאֵֽל׃ פִּֽינְחָ֨ס בֶּן־אֶלְעָזָ֜ר בֶּן־אַהֲרֹ֣ן הַכֹּהֵ֗ן הֵשִׁ֤יב אֶת־חֲמָתִי֙ מֵעַ֣ל בְּנֵֽי־יִשְׂרָאֵ֔ל בְּקַנְא֥וֹ אֶת־קִנְאָתִ֖י בְּתוֹכָ֑ם וְלֹא־כִלִּ֥יתִי אֶת־בְּנֵֽי־יִשְׂרָאֵ֖ל בְּקִנְאָתִֽי׃ וְהָ֤יְתָה לּוֹ֙ וּלְזַרְע֣וֹ אַחֲרָ֔יו בְּרִ֖ית כְּהֻנַּ֣ת עוֹלָ֑ם תַּ֗חַת אֲשֶׁ֤ר קִנֵּא֙ לֵֽאלֹהָ֔יו וַיְכַפֵּ֖ר עַל־בְּנֵ֥י יִשְׂרָאֵֽל׃
When Phinehas, son of Eleazar son of Aaron the priest, saw this, he left the assembly and, taking a spear in his hand, he followed the Israelite man into the chamber and stabbed both of them, the Israelite man and the woman, through the belly. Then the plague against the Israelites was checked. “Phinehas, son of Eleazar son of Aaron the priest, has turned back My wrath from the Israelites by displaying among them his passion for Me, so that I did not wipe out the Israelite people in My passion. It shall be for him and his descendants after him a pact of priesthood for all time, because he took impassioned action for his God, thus making expiation for the Israelites.’”