Albert Barnes Commentary Joshua 7:6

"And Joshua rent his clothes, and fell to the earth upon his face before the ark of Jehovah until the evening, he and the elders of Israel; and they put dust upon their heads." — Joshua 7:6 (ASV)

On these signs of mourning, compare the marginal references, Leviticus 10:6, Numbers 20:6, and 1 Samuel 4:12.