and after everyone had finished crossing, the priests with the ark of the LORD crossed in the sight of the people.
The inspired historian seems to be so well pleased with his subject here that he is loth to quit it, and is therefore very particular in his narrative, especially in observing how closely Joshua pursued the orders God gave him, and that he did nothing without divine direction, finishing all that the Lord had commanded him (v. 10), which is also said to be what Moses commanded.
Commenting on Joshua 4:10-19
And it came to pass, when the people were clean passed over,.... Every one of them, as in Jos 3:17, that the ark of the Lord passed over, and the priests, in the presence of the people; that is, the priests bearing the ark came out of the midst of Jordan in the sight of all the people, who were on the banks of it...
THE PEOPLE PASS OVER. (Jos 4:10-13) the priests which bare the ark stood in the midst of Jordan--This position was well calculated to animate the people, who probably crossed below the ark, as well as to facilitate Joshua's execution of the minutest instructions respecting the passage (Num 27:21-23).
Commenting on Joshua 4:10-13