So Joshua rose up early in the morning, and brought Israel near by their tribes; and the tribe of Judah was taken:
The heap of stones the people raised over Achan, his family, and his possessions (Joshua 7:26) memorialized this act of rebellion for the Israelites and their children (cf. Joshua 8:29; 2 Samuel 18:17). They named the valley in which the execution took place "Achor" (lit. troubling or disaster) as a further reminder (cf. Hosea 2:15; Isaiah 65:10). Note the wordplay with Achan’s name.