The son of Zerah, i.e. one of his posterity, Joshua 7:17,18. Perished not alone, but brought destruction upon his whole family, and part of our forces sent against Ai. In his iniquity, or, for his sin; of which see Joshua 7:24.
Related Commentaries of Joshua 22:20
Joshua 22:20
20 Did not Achan the son of Zerah commit a trespass in the accursed thing, and wrath fell on all the congregation of Israel? and that man perished not alone in his iniquity.