Num 25:8
Through this judgment, which was executed by Phinehas with holy zeal upon the daring sinners, the plague was restrained, so that it came to an end. The example which Phinehas had made of these sinners was an act of intercession, by which the high priest appeased the wrath of God, and averted the judgment of destruction from the whole congregation (“he was zealous for his God,” ויכפּר, Num 25:13). The thought upon which this expression is founded is, that the punishment which was inflicted as a purifying chastisement served as a “covering” against the exterminating judgment (see Herzog's Cyclopaedia).