C. F. Keil and Franz Delitzsch on Joshua 22:17

Jos 22:17

To show the greatness of the sin through apostasy from the Lord, the speaker reminds them of two previous acts of sin on the part of the nation, which had brought severe judgments upon the congregation. “Is there too little for us in the iniquity of Peor (i.e., with Peor, or through the worship of Peor, Num 25:3), from which we have not cleansed ourselves till this day, and there came the plague upon the congregation of Jehovah?” את־עון is an accusative: see Ges. §117, 2; Ewald, §277, d. That plague, of which 24,000 Israelites died, was stayed through the zeal of Phinehas for the honour of the Lord (Num 25:4-9, Num 25:11). The guilt connected with the worship of Peor had thereby been avenged upon the congregation, and the congregation itself had been saved from any further punishment in consequence of the sin. When Phinehas, therefore, affirmed that the congregation had not yet been cleansed from the crime, he did not mean that they were still bearing or suffering from the punishment of that crime, but that they were not yet cleansed from that sin, inasmuch as many of them were still attached to idolatry in their hearts, even if they had hitherto desisted from it outwardly from fear of the infliction of fresh judgment.