Albert Barnes Commentary Joshua 22:17

"Is the iniquity of Peor too little for us, from which we have not cleansed ourselves unto this day, although there came a plague upon the congregation of Jehovah," — Joshua 22:17 (ASV)

From which we are not cleansed until this day - Phinehas, who had borne a conspicuous part in vindicating the cause of God against those who fell away to Baal-peor, means that terrible as the punishment had been, there were still those among them who hankered after Baal worship, and even practiced it in secret. .