John Gill's Bible Commentary Ver. 2. Moses my servant is dead , etc.] Which was said not for the information of Joshua, but to lead on to, and show the cause and reason of what he was about to say to him: now therefore arise, go over this Jordan ; near to which the whole body of the people of Israel were, and very probably were in sight of it: thou, and all this people : which were very numerous, six hundred thousand men or more, besides a great number of women and children, and no boats to carry them over, or pontoons to put across the river: unto the land which I give unto them, [even] to the children of Israel ; and therefore it could be no case of conscience with Joshua, to go and take it out of the hands of the present inhabitants, since the Lord, who had a right to dispose of it, gave it to them. As this land was a type of heaven, and eternal life, which is the free gift of God through Christ, passing over the river of Jordan to it may be an emblem of the passage through death to the heavenly state; both of the death of Christ, the antitypical Joshua, who passed through it, as a surety to make satisfaction for sin, and as a forerunner to set an example, to sanctify death, to open a way into the holiest of holies, and prepare a place for his people; and of the death of the saints, which is necessary to their enjoyment of perfect rest and happiness.
Matthew Henry Commentary
Verses 1-4 - Joshua had attended upon Moses. He who was called to honour, had bee long used to business. Our Lord Jesus took upon him the form of servant. Joshua was trained up under command. Those are fittest to rule, who have learned to obey. The removal of useful men shoul quicken survivors to be the more diligent in doing good. Arise, go ove Jordan. At this place and at this time the banks were overflowed Joshua had no bridge or boats, and yet he must believe that God, havin ordered the people over, would open a way.
Original Hebrew משׁה4872 עבדי5650 מת4191 ועתה6258 קום6965 עבר5674 את853 הירדן3383 הזה2088 אתה859 וכל3605 העם5971 הזה2088 אל413 הארץ776 אשׁר834 אנכי595 נתן5414 להם לבני1121 ישׂראל׃3478