Yahweh said to Joshua, Get you up; why are you thus fallen on your face?
Israel resorted to the casting of lots when no eyewitness could testify against a criminal (cf. 1 Samuel 14:41-42; Jonah 1:7; Proverbs 18:18). Probably the high priest used the Urim and Thummim to identify Achan (cf. Numbers 27:21).