The Rabbis share thier insights and observations on one pasuk from Parshas Pinchas Chapter 25 Verse 13:
וְהָיְתָה לּוֹ וּלְזַרְעוֹ אַחֲרָיו בְּרִית כְּהֻנַּת עוֹלָם תַּחַת אֲשֶׁר קִנֵּא לֵאלֹהָיו וַיְכַפֵּר עַל־בְּנֵי יִשְׂרָאֵל׃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.