Achan answered Joshua, and said, Of a truth I have sinned against Yahweh, the God of Israel, and thus and thus have I done:
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.