John Gill Commentary Joshua 3:2

"And it came to pass after three days, that the officers went through the midst of the camp;" — Joshua 3:2 (ASV)

And it came to pass after three days
At the end of the three days they were bid to prepare food for their expedition, and to go over Jordan, (Joshua 1:11) ;

that the officers went through the host ;
the camp of Israel; very probably the same as in (Joshua 1:10) ; this was, no doubt, by the order of Joshua, and who was directed to it by the Lord.