“So Moses arose with Joshua his servant, and Moses went up to the mountain of God” (Exodus 24:13).
Always referred to as the servant of Moses, Joshua was used to taking orders as opposed to giving them.
That’s why, when the day arrived for Moses to announce that his earthly work was finished and God was recalling him and that Joshua would have to carry on (“Get these people into the Promised Land!”), he, Joshua, must have panicked.
For four decades Joshua has been warming the bench; now, he’s being sent into the game as the clock ticks down and everything is on the line.
What would he do without a boss over him, someone telling him what to do and how to do it, someone to whom he could report, who would grade him and pat him on the head when he did good or chew him out when his work fell short?