In Numbers 25, the Lord sent a plague upon the Israelites, killing 24,000 as a result of their immorality and participating in Moabite sacrifices to the Baal of Peor. A grandson of Aaron, Phinehas, turned the Lord's anger away from the Israelites by his zeal for God's honor. God said to Moses, "Therefore tell him (Phinehas) I am making my covenant of peace with him. He and his descendants will have a covenant of a lasting priesthood, because he was zealous for the honor of his God and made atonement for the Israelites."