10 And the priests bearing the ark are standing in the midst of the Jordan till the completion of the whole thing which Jehovah commanded Joshua to speak unto the people, according to all that Moses commanded Joshua, and the people haste and pass over. 11 And it cometh to pass when all the people have completed to pass over, that the ark of Jehovah passeth over, and the priests, in the presence of the people; 12 and the sons of Reuben, and the sons of Gad, and the half of the tribe of Manasseh, pass over, by fifties, before the sons of Israel, as Moses had spoken unto them; 13 about forty thousand, armed ones of the host, passed over before Jehovah for battle, unto the plains of Jericho.
Matthew Henry's Commentary on Joshua 4:10-13
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.