and commanded the people, “As soon as you see the ark of the covenant of the LORD your God being carried by the Levitical priests, then you shall set out from your place and follow it.
Rahab, in mentioning to the spies the drying up of the Red Sea (Jos 2:10), the report of which terrified the Canaanites more than anything else, intimates that those on that side the water expected that Jordan, that great defence of their country, would in like manner give way to them. Whether the Israelites had any expectation of it does not appear.
Commenting on Joshua 3:1-6
And they commanded the people,.... In the name of Joshua, by whom they were sent: saying, when ye see the ark of the covenant of the Lord your God, and the priests the Levites bearing it: the Targum reads, the priests and Levites; so the Septuagint: it was the business of the Levites, particularly the Kohathites, to bear the ark in journeying, but here the...
When ye see the ark . . ., and the priests the Levites bearing it--The usual position of the ark, when at rest, was in the center of the camp; and, during a march, in the middle of the procession.