Matthew Poole and continuators on Joshua 6:3

3 And ye shall compass the City, all ye men of war, and go round about the City once : thus shalt thou do six days .

At convenient distance, out of the reach of their Arrows.

Every day once. This and the following course might seem ridiculous and absurd, and is therefore prescribed and used by God, that they might learn to take new measures of things, and to expect success not from their own valour, or skill, or probable means, but meerly from Gods appointment and blessing; and in general, not to judge of any of Gods Institutions by meer carnal reason, to which divers of their Ceremonies would seem no less foolish than this action; and that they might have a full Demonstration of the All-sufficiency of that God who can do what he pleaseth, even by the most contemptible means.