The interpretation timeline
Numbers 13:23 Douay-Rheims

And they went up at the south side, and came to Hebron, where were Achiman and Sisai and Tholmai the sons of Enac. For Hebron was built seven years before Tanis the city of Egypt.

A.D. 45 – 1875 6 witnesses

Patristic

before A.D. 750
45
A.D.
c. 15 B.C.–A.D. 45
“XVIII. This hill Jacob, the wrestler with God, in his agreements with Laban, calls a witness, showing in a most express manner, and in the form of a precept, that the mind is a witness to each individual of the determinations which he comes to in secret ; and conscience, which is the most incorruptible and truth-telling witness of all, was built before these cities ; for Moses says that the spies came to Chebron, and these three are Acheman, and Jesein, and Thalamein, of the sons of Enoch : and this he adds, " and Chebron was built seven years before Janis, in Egypt," and these synonymous appellations are distinguished according to their species in a most natural manner. Chebron, being interpreted, means compunction, and this is of two kinds ; one with reference to the soul being joined to the body, the other with reference to its being adapted to virtue. Now the soul that subjects itself to bodily conpunctions has the beforementioned inhabitants. Acheman, being interpreted, means, my brother, and Jesein means " outside of me," and Thalmein means, some one in suspense ; for it follows of necessity, that the body must be thought akin to the souls that love the body, and that external good things must be exceedingly admired by them, and all the souls which have this kind of disposition depend on dead things, and, like persons who are crucified, are attached to corruptible matter till the day of their death. But the soul that is united to virtue has for its inhabitants those persous who are pre-eminent for virtue, persons whom the double cavern has received in pairs, Abraham and Sarah, Isaac and Rebeckah, Leah and Jacob, virtues and those who possess them ; Chebron itself keeping the treasure-house of the memorials of knowledge and wisdom, which is more ancient than Janis and the whole land of Egypt, for nature Numbers xiii. 23. lias made the soul more ancient than the body, that is than Egypt, and virtue more ancient than vice, that is than Janis, (and the name Janis, being interpreted, means the command of answer), estimating seniority rather by dignity than by length of time.”
Source

Scholastic

c. 1100 – 1500
1105
A.D.
Rashi Jewish
1040–1105
זמורה (lit., AND THEY CUT DOWN FROM THENCE) A BRANCH [AND ONE CLUSTER OF GRAPES] — i.e. a vine branch with a cluster of grapes hanging from it (not as the text might suggest, that they cut a branch and they cut also a cluster of grapes), וישאהו במוט בשנים AND THEY BARE IT UPON A POLE BETWEEN TWO — From what is implied in the statement “And they bare it upon a pole”, do I not know that it was carried by two men”? why then does it add the word ‎בשנים?‎ It means, not as you assume, “by two men” but “upon two poles”. How was that done? Eight of the spies bore the cluster of grapes. Besides these, one spy took the fig and one the pomegranate, but Joshua and Caleb did not take anything (although all of them were bidden to do so; cf. v. 20), because the very essence of their (the other spies’) intention was only to bring an evil report: “Just as its fruit is extraordinary in size, so is its people extraordinary in size”. — Now if you wish to know how much was the burden of each of them, go and learn from the weight of the stones which they erected at Gilgal; for it is related (Joshua 4:5 and 20) that each man lifted by himself one stone from out of the Jordan on to his shoulder, and set it up at Gilgal; — and our Rabbis ascertained the weight of each stone to be forty Seahs, and it is an accepted fact that a load which a person can by himself lift up on to his shoulder is only the third of the load he can carry if people assist him in lifting it up (Sotah 34b).”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“The Amalekites dwell in the land of the south,.... On the southern side of the land of Canaan: not in it, for they were not Canaanites, but neighbours to them, and lay nearest to the camp of Israel, and at the entrance into the land of Canaan; and as they were enemies of Israel, as appears from an attack upon them quickly after they came from the Red sea, in Rephidim, Exo 17:8; and friends to the Canaanites, they would no doubt oppose their passage into their land, as they did, Num 14:43; this is one difficulty in the way of possessing the land hinted at, others follow: and the Hittites, and the Jebusites, and the Amorites, dwell in the mountains; and guard the passes there; so that should they escape the Amalekites, or get the better of them, they would not be able to pass the mountains, being so well inhabited and defended; the Hittites seem to dwell about Mount Lebanon, Jos 1:4; the Jebusites inhabited the mountains about Jerusalem, and that itself, which was called by them Jebus, and from which they were not dispossessed until the times of David, Ch1 11:4; and the Amorites were possessed of the mountain which was on the borders of the land, next to the place where Israel now were, Deu 1:20, and the Canaanites dwell by the sea; these dwelt both on the east and on the west of the land, Jos 11:3; so that the western Canaanites dwelt on the shore of the Mediterranean sea, which is often put for the west in Scripture; and the eastern Canaanites dwelt by the Dead sea, or by the sea of Tiberias, called sometimes the lake of Gennesaret, and seems the rather to be meant here by what follows: and by the coast of Jordan; so that this river was not passable by them; for by all this they would suggest that all avenues and passes were stopped up, so that it was a vain thing to attempt entrance into the land, or to expect ever to possess it.”
Source
1849
A.D.
1774–1849
“And came. The printed Hebrew has, “and he came:” but the Samaritan and all the versions, as well as some manuscripts, properly retain the plural, which the Massorets allow is right. (Kennicott, Diss. 1.) — Enac, the founder of Hebron, and father of the giants of Chanaan, Josue xv. 13. The Greek word anax, “king,” was perhaps derived from him, as also the famous Inachides, who settled in Greece, after they were driven out by Josue. (Grotius) — Tanis, where the tyrants of the Hebrews resided; a city, which the Egyptians represented as the most ancient in the world. Moses represses their vain boasting, by informing them that Hebron was of greater antiquity. It was afterwards assigned to the priests, and for a city of refuge, in the tribe of Juda, Josue xx. 7.”
Source
1871
A.D.
1871
“they came unto the brook of Eshcol--that is, "the torrent of the cluster." Its location was a little to the southwest of Hebron. The valley and its sloping hills are still covered with vineyards, the character of whose fruit corresponds to its ancient celebrity. and cut down from thence a branch with one cluster of grapes--The grapes reared in this locality are still as magnificent as formerly--they are said by one to be equal in size to prunes, and compared by another to a man's thumb. One cluster sometimes weighs ten or twelve pounds. The mode of carrying the cluster cut down by the spies, though not necessary from its weight, was evidently adopted to preserve it entire as a specimen of the productions of the promised land; and the impression made by the sight of it would be all the greater because the Israelites were familiar only with the scanty vines and small grapes of Egypt.”
Source
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“The spies also came into the valley of Eshcol, where they gathered pomegranates and figs, and also cut down a vine-branch with grapes upon it, which two persons carried upon a pole, most likely on account of its extraordinary size. Bunches of grapes are still met with in Palestine, weighing as much as eight, ten, or twelve pounds, the grapes themselves being as large as our smaller plums (cf. Tobler Denkbltter, pp. 111, 112). The grapes of Hebron are especially celebrated. To the north of this city, on the way to Jerusalem, you pass through a valley with vineyards on the hills on both sides, containing the largest and finest grapes in the land, and with pomegranates, figs, and other fruits in great profusion (Robinson, Palestine, i. 316, compared with i. 314 and ii. 442). This valley is supposed, and not without good ground, to be the Eshcol of this chapter, which received its name of Eshcol (cluster of grapes), according to Num 13:24, from the bunch of grapes which was cut down there by the spies. This statement, of course, applies to the Israelites, and would therefore still hold good, even if the conjecture were a well-founded one, that this valley received its name originally from the Eshcol mentioned in Gen 14:13, Gen 14:24, as the terebinth grove did from Mamre the brother of Eshcol.”
Source
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.