when I saw among the spoil a goodly Babylonian mantle, and two hundred shekels of silver, and a wedge of gold of fifty shekels weight, then I coveted them, and took them; and, behold, they are hid in the earth in the midst of my tent, and the silver under it.
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.