What does the Bible say about Achan's sin?

In Joshua 7, Achan's sin of taking what was devoted to destruction shows how one man's disobedience can lead to consequences for the entire community. The anger of the Lord was kindled against Israel because Achan, representing all of humanity in his rebellion, took what belonged to God, leading to Israel's defeat at Ai. This narrative emphasizes the seriousness of sin and its impact, reflecting how the sin of one affects the whole, paralleling Adam's transgression in the Garden of Eden.