Josh 3:1

“But Jesus [Joshua], son of Nave [Nun], was a type of him in many things; for when he began to rule the people, he began from the Jordan; thence also did Christ begin to preach the gospel after he was baptized. The son of Nave [Nun] appoints the twelve to divide the inheritance;2 and Jesus sends forth the twelve apostles, heralds of truth, into the whole world. He who was the type saved Rahab, the harlot, who had believed;4 the true Jesus … says, Behold: "the publicans and the harlots are entering the kingdom of God before you." With but a shout, the walls of Jericho collapsed in the time of the type;6 and because of these words of Jesus, "There will not be left here one stone upon another," the temple of the Jews just opposite us is fallen; not that this sentence was the cause of its ruin, but rather the sin of the transgressors.”

“Jos 3:1-4 "Arrangements for the Passage through the Jordan. - When they reached the Jordan, the Israelites rested till they passed over. לוּן, to pass the night; then in a wider sense to tarry, Pro 15:31; here it means to rest. According to Jos 3:2, they stayed there three days. "At the end (after the expiration) of three days" cannot refer to the three days mentioned in Jos 1:11, if only because of the omission of the article, apart from the reasons given in the note upon Jos 1:11, which preclude the supposition that the two are identical. The reasons why the Israelites stayed three days by the side of the Jordan, after leaving Shittim, are not given, but they are not difficult to guess; for, in the first place, before it could be possible to pass into an enemy's country, not only with an army, but with all the people, including wives, children, and all their possessions, and especially when the river had first of all to be crossed, it must have been necessary to make many preparations, which would easily occupy two or three days. Besides this, the Jordan at that time was so high as to overflow its banks, so that it was impossible to cross the fords, and they were obliged to wait till this obstruction was removed. But as soon as Joshua was assured that the Lord would make a way for His people, he issued the following instructions through the proper officers to all the people in the camp: "When ye see the ark of the covenant of the Lord your God, and (see) the Levitical priests bear it, then ye shall remove from your place, and go after it: yet there shall be a space between you and it, about two thousand cubits by measure: come not near unto it; that ye may know the way by which ye must go: for ye have not passed this way yesterday and the day before." On the expression "the Levitical priests," see at Deu 31:25, as compared with Jos 3:9 and Jos 17:9. בּינו, both here and in Jos 8:11, should probably be pointed בּינו (vid., Ewald, 266, a.). This command referred simply to the march from the last resting-place by the Jordan into the river itself, and not to the passage through the river, during which the priests remained standing with the ark in the bed of the river until the people had all passed through (Jos 3:8 and Jos 3:17). (Note: Knobel maintains that this statement, according to which the Israelites were more than 2000 cubits from the place of crossing, is not in harmony with Jos 3:1, where they are said to have been by the Jordan already; but he can only show this supposed discrepancy in the text by so pressing the expression, they "came to Jordan," as to make it mean that the whole nation was encamped so close to the edge of the river, that at the very first step the people took their feet would touch the water.) The people were to keep about 2000 cubits away from the ark. This was not done, however, to prevent their going wrong in the unknown way, and so missing the ford, for that was impossible under the circumstances; but the ark was carried in front of the people, not so much to show the road as to make a road by dividing the waters of the Jordan, and the people were to keep at a distance from it, that they might not lose sight of the ark, but keep their eyes fixed upon it, and know the road by looking at the ark of the covenant by which the road had been made, i.e., might know and observe how the Lord, through the medium of the ark, was leading them to Canaan by a way which they had never traversed before, i.e., by a miraculous way. Jos 3:5-6 Joshua then issued instructions (a) to the people to sanctify themselves, because on the morrow the Lord would do wonders among them; and (b) to the priests, to carry the ark of the covenant in front of the people. The issuing of these commands with the prediction of the miracle presupposes that the Lord had already made known His will to Joshua, and serves to confirm our conclusions as to the arrangement of the materials. The sanctification of the people did not consist in the washing of their clothes, which is mentioned in Exo 19:10, Exo 19:14, in connection with the act of sanctification, for there was no time for this; nor did it consist in merely changing their clothes, which might be a substitute for washing, according to Gen 35:2, or in abstinence from connubial intercourse (Exo 19:15), for this was only the outward side of sanctification. It consisted in spiritual purification also, i.e., in turning the heart to God, in faith and trust in His promise, and in willing obedience to His commandments, that they should lay to heart in a proper way the miracle of grace which the Lord was about to work in the midst of them and on their behalf on the following day. "Wonders:" those miraculous displays of the omnipotence of God for the realization of His covenant of grace, which He had already promised in connection with the conquest of Canaan (Exo 34:10). In Jos 3:6, where the command to the priests is given, the fulfilment of the command is also mentioned, and the course of events anticipated in consequence.”