18 And it cometh to pass, in the coming up of the priests bearing the ark of the covenant of Jehovah out of the midst of the Jordan—the soles of the feet of the priests have been drawn up into the dry ground—and the waters of the Jordan turn back to their place, and go as heretofore over all its banks.
Matthew Henry's Commentary on Joshua 4:18
Commentary on Joshua 4:10-19
(Read Joshua 4:10-19)
The priests with the ark did not stir till ordered to move. Let none be weary of waiting, while they have the tokens of God's presence with them, even the ark of the covenant, though it be in the depths of adversity. Notice is taken of the honour put upon Joshua. Those are feared in the best manner, and to the best purpose, who make it appear that God is with them, and that they set him before them.