I. The first picture here brought before us is that of the motionless ark in the midst of what had been Jordan. There is an obvious intention to contrast the stillness of the priests, bearing it on their shoulders, and standing rooted in that strange place all these long hours, with the hurry around. 'The priests stood ... and the people hasted.' However broad the front and swift the march, the crossing must have taken many hours. The haste was not from fear, but eagerness. It was 'an industrious speed and mannerly quickness, as not willing to make God wait upon them, in continuing a miracle longer than necessity did require.' When all were over, then came the twelve and Joshua, who would spend some time in gathering the stones and rearing the memorial in the river-bed. Through all the stir the ark was still. Over all the march it watched. So long as one Israelite was in the channel it remained, a silent presence, to ensure his safety. It let their rate of speed determine the length of its standing there. It waited for the slowest foot and the weariest laggard. God makes His 'very present help' of the same length as our necessities, and lets us beat the time to which He conforms. Not till the last loiterer has struggled to the farther shore does He cease by His presence to keep His people safe on the strange road which by His presence He has opened for them. The silent presence of the ark is enough to dam up the stream. There is vehement action around, but the cause of it all is in absolute repose. God moves all things, Himself unmoved. He 'worketh hitherto,' and no intensity of energy breaks the depth of His perfect rest. His activity implies no effort, and is followed by no exhaustion. The ark is still, while it holds back a swollen river for hours. The centre of the swiftest revolution is a point of rest. The form of the miracle was a condescension to weak faith, to which help was ministered by giving sense something to grasp. It was easier to believe that the torrent would not rush down on them when they could look at the priests standing there motionless, with the visible symbol of God's presence on their shoulders. The ark was no more the cause of the miracle than were its carriers; but, just as Jesus helped one blind man by laying moistened earth on his eyes, and another by sending him to Siloam to wash, so God did here. Children learn best when they have something to look at. Sight is sometimes the servant of faith. We need not dwell on the summary, beginning with verse 11, which anticipates the subject of the next section, and adds that the fighting men of the tribes who had already received their inheritance on the east bank of Jordan, loyally kept their promise, and marched with their brethren to the campaign.