The interpretation timeline
Joshua 1:2 Douay-Rheims

Moses my servant is dead: arise, and pass over this Jordan, thou and thy people with thee, into the land which I will give to the children of Israel.

A.D. 317 – 1875 9 witnesses

Patristic

before A.D. 750
317
A.D.
c. A.D. 240–317
“For the prophet does not speak this way: "And the Lord said to me," but to Jesus [Joshua], in order to show that he was not speaking of himself but of Christ to whom God was then speaking. For that Jesus [Joshua] was a figure of Christ. Although he was first called Hoshea, Moses, foreseeing the future, ordered him to be called Joshua (or Jesus), so that, since he was selected leader of the soldiery against Amalek who was attacking the children of Israel, he might overcome the adversary through the figure of his name and lead the people into the land of promise. And for this reason also he succeeded Moses, to show that the new law given through Jesus Christ would succeed the old law which was given through Moses.”
Source
397
A.D.
Ambrose of Milan Patristic
A.D. 339–397
“Joshua the son of Nun became so great, because his union with Moses was the means not only of instructing him in a knowledge of the law but also of sanctifying him to receive grace. When in his tabernacle the majesty of the Lord was seen to shine forth in its divine Presence, Joshua alone was in the tabernacle. When Moses spoke with God, Joshua too was covered by the sacred cloud. The priests and people stood below, and Joshua and Moses went up the mount to receive the law. All the people were within the camp; Joshua was without the camp in the tabernacle of witness. When the pillar of a cloud came down and God spoke with Moses, Joshua stood as a trusty servant beside him. He, a young man, did not go out of the tabernacle, though the old men who stood far off trembled at these divine wonders.”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“The name of Jesus [Joshua] was a type. For this reason then, and because of the very name, the creation reverenced him. What then! Was no other person called Jesus [Joshua]? But this man was on this account so called as a type; for he used to be called Hoshea. Therefore the name was changed: for it was a prediction and a prophecy. He brought in the people into the promised land, as Jesus into heaven; not the law; since neither did Moses [enter the promised land] but remained outside. The law has not power to bring in, but grace.”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
“Moshe, My servant is dead. But if he were alive, this is connected to what follows: Since he is dead, you must arouse yourself and cross this Jordan. I would have wanted him [as the leader]. Hashem said that if Moshe was still alive, you would be unable to cross the Jordon because of the decree preventing him from crossing the Jordon. See Bamidbar 20:12; Ibid 27:12,13. Our Sages explain [that this passage is a reference] [to the three thousand laws that were forgotten] during the period of mourning for Moshe. Yehoshua then came and asked. the Holy One blessed is He, said to him: “Moshe, My servant is dead, and the Torah is called on his name, which is like telling you that it is impossible. Go and burden them with battles.””
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“Moses my servant is dead,.... 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.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“Moses my servant - The word, servant, as applied both to Moses and Joshua, is to be understood in a very peculiar sense. It signifies God's prime minister, the person by whom he issued his orders, and by whom he accomplished all his purposes and designs. No person ever bore this title in the like sense but the Redeemer of mankind, of whom Moses and Joshua were types. Go over this Jordan - The account given by Josephus of this river may not be unacceptable here. "Panium is thought to be the mountain of Jordan, but in reality it is carried thither in an occult manner from the place called Phiala. This place lies on the road to Trachonitis, and is one hundred and twenty furlongs from Caesarea, not far out of the road, on the right hand. It has its name Phiala, (a bowl or basin), very justly, from the roundness of its circumference, being round like a wheel. It is always full, without ever sinking or running over. This origin of the Jordan was not known till the time of Philip, tetrarch of Trachonitis, who having ordered some chaff to be thrown in at Phiala, it was found at Panium. Jordan's visible stream arises from this cavern, (Panium), and divides the marshes and fens of the lake Semechon; and when it has run another hundred and twenty furlongs, it first passes by the city Julias, and then passes through the middle of the lake Gennesareth, after which, running a long way over the desert, it empties itself into the lake Asphaltites." - War, book iii. chap. x., sect. 7. See the note on Num 34:12.”
Source
1849
A.D.
1774–1849
“Jordan , a river well known, which rises in Antilibanus, not from Panion, but from the lake Phiala, as Herod the Tetrarch discovered by throwing some straw into the latter, which passed by a subterraneous passage into Panion. Thence it proceeds to the Semonite lake and to Daphne, where it begins to be called the Great Jordan. (Josephus, Jewish Wars iii. 33.) Having traversed the land of Palestine in a southern direction, it loses itself in the lake of Sodom. (Calmet) — It is a very rapid river, and hence its appellation from irod , or jord, descendit, is very probably derived. (Haydock) — The Arabs call it Zacchar, “overflowing,” because the snows and rains cause it formerly to overflow about Easter. (Universal History) — When Maundrell travelled through this country, the stream was too rapid for a person to swim against it. (Parkhurst) — Hence the miracle of the Hebrews passing through the Jordan on dry land, when its waters were the most copious and violent, would be the more observable. (Haydock)”
Source
1871
A.D.
1871
“now therefore arise, go over this Jordan--Joshua's mission was that of a military leader. This passage records his call to begin the work, and the address contains a literal repetition of the promise made to Moses (Deu 11:24-25; Deu 31:6-8, Deu 31:23).”
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“As Moses had died without having brought the Israelites to Canaan, Joshua was to arise and go with all the nation over this Jordan (i.e., the river then before him) into the land which the Lord would give them.”
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.