Numbers 14:42-45

Do not go up, for the LORD is not among you, lest you be struck down before your enemies. For there the Amalekites and the Canaanites are facing you, and you shall fall by the sword. Because you have turned back from following the LORD, the LORD will not be with you.” But they presumed to go up to the heights of the hill country, although neither the ark of the covenant of the LORD nor Moses departed out of the camp. Then the Amalekites and the Canaanites who lived in that hill country came down and defeated them and pursued them, even to Hormah.