IV. As soon as ever the priests and the ark had come up out of Jordan, the waters of the river, which had stood on a heap, gradually flowed down according to their nature and usual course, and soon filled the channel again, v. 18. This makes it yet more evident that the stop which had now been given to the river was not from any secret natural cause, but purely from the power of God's presence, and for the sake of his Israel; for when Israel's turn was served, and the token of God's presence was removed, immediately the water went forward again; so that if it be asked, What ailed thee, O Jordan! that thou wast driven back? It must be answered, It was purely in obedience to the God of Israel, and in kindness to the Israel of God. There is therefore none like unto the God of Jeshurun; happy also art thou, O Israel! who is like unto thee, O people? Some observe here, by way of allusion, that when the ark, and the priests that bore it, are removed from any place, the flood-gates are drawn up, the defence has departed, and an inundation of judgments is to be expected shortly. Those that are unchurched will soon be undone. The glory has departed if the ark is taken.