The interpretation timeline
Genesis 28:18 Douay-Rheims

And Jacob, arising in the morning, took the stone, which he had laid under his head, and set it up for a title, pouring oil upon the top of it.

A.D. 346 – 1875 9 witnesses

Patristic

before A.D. 750
346
A.D.
c. A.D. 270–346
“Now Jacob called that place Bethel; and Jacob raised up there a pillar of stone as a testimony, and he poured oil over it. Our father Jacob did this too in symbol, anticipating that stones would receive anointing, for the peoples who have believed in Christ are the stones that are anointed, just as John says of them: "From these stones God is able to raise up children for Abraham." For in Jacob's prayer the calling of the nations was symbolized.”
Source
407
A.D.
John Chrysostom Patristic
A.D. 347–407
“Since he had been granted wonderful favors by way of the vision, [Jacob] wished to make the place memorable by a name and to keep the memory fresh for future ages. He set up the stone as a monument, poured oil on it (this, after all, was probably all he had with him, traveling as he was like this), and to the loving God he offered a prayer characterized by complete good sense.”
Source
430
A.D.
Augustine of Hippo Patristic
A.D. 354–430
“In a dream Jacob saw a ladder, and on this ladder he saw angels ascending and descending; and he anointed the stone that he had placed at his head. You have heard that the Messiah is the Christ; you have heard that the Christ is the Anointed. For he did not place the anointed stone so that he might come and adore it; otherwise it would be idolatry and not a representation of Christ. Therefore a representation was made, so far as a representation needed to be made, and Christ was represented. The stone was anointed. Why a stone? "Behold, I lay in Zion a chosen stone, precious; and he who believes in it shall not be confounded." Why anointed? Because [the name] "Christ" [is derived] from [the word] chrisma.”
Source

Scholastic

c. 1100 – 1500
1270
A.D.
Ramban Jewish
1194–1270
“AND HE SET IT UP FOR A PILLAR. Our Rabbis have explained the difference between a pillar and an altar by saying that a pillar consists of one stone while an altar is composed of many stones. It further appears that a pillar is made for pouring libations of wine upon it and for the pouring of oil upon it, but not for sacrifices and not for offerings, whereas an altar is for bringing Burnt-offerings and Peace-offerings thereon. When Israel entered the Land, the pillar was prohibited to them because the Canaanites had established it as an ordinance of an idolatrous character to a greater extent than the altars. Even though it is written concerning the altars, Ye shall break down their altars, [since the altars were not as prevalent as pillars among the Canaanites, He did not prohibit the Israelites from making their own altars]. It may be that He did not want to prohibit all sacrifices, and so He retained the altar as fit for libations and sacrifices.”
Source

Post-Reformation

c. 1650 – 1900
1771
A.D.
John Gill Reformed
1697–1771
“And Jacob rose up early in the morning,.... In order to proceed on his journey, being comfortably refreshed both in body and mind: but first he took the stone that he had put for his pillows, and set it up for a pillar; not for a statue or an idol to be worshipped, but for a memorial of the mercy and goodness of God unto him, see Jos 4:3; indeed, among the Heathens, stones, even rude and unpolished ones, were worshipped as gods; and this was the ancient custom among the Greeks, and which, as Pausanias (l) says, universally obtained among them: and poured oil upon the top of it; which he had brought with him for necessary uses in his journey, or fetched from the neighbouring city; the former is most likely: and this he did, that he might know it again when he returned, as Aben Ezra remarks, and not for the consecration of it for religious use; though it is thought, by some learned men (m), that the Phoenicians worshipped this stone which Jacob anointed; and that from this anointed stone at Bethel came the Boetylia, which were anointed stones consecrated to Saturn and Jupiter, and others, and were worshipped as gods; the original of which Sanchoniatho (n) ascribes to Uranus, who, he says, devised the Boetylia, forming animated stones, which Bochart renders anointed stones; and so Apuleius (o), Minutius Felix (p), Arnobius (q), and others, speak of anointed stones, worshipped as deities; and hence it may be through the early and ancient abuse of such pillars it was, that they were forbidden by the law of Moses, and such as the Heathens had erected were to be pulled down, Lev 26:1. (l) Achaiaca sive, l. 7. p. 441. (m) Bochart. Canaan. l. 2. c. 2. col. 707, 708. Marsham. Chronicon, p. 56. & alii. (n) Apud Euseb. Praepar. Evangel. l. 1. p. 37. (o) Florida, c. 1. (p) Octav. p. 2. (q) Adv. Gentes, l. 1. p. 2.”
Source
1832
A.D.
Adam Clarke Methodist
1762–1832
“And Jacob - took the stone - and set it up for a pillar - He placed the stone in an erect posture, that it might stand as a monument of the extraordinary vision which he had in this place; and he poured oil upon it, thereby consecrating it to God, so that it might be considered an altar on which libations might be poured, and sacrifices offered unto God. See Gen 35:14. The Brahmins anoint their stone images with oil before bathing; and some anoint them with sweet-scented oil. This is a practice which arises more from the customs of the Hindoos than from their idolatry. Anointing persons as an act of homage has been transferred to their idols. There is a foolish tradition that the stone set up by Jacob was afterwards brought to Jerusalem, from which, after a long lapse of time, it was brought to Spain, from Spain to Ireland, from Ireland to Scotland, and on it the kings of Scotland sat to be crowned; and concerning which the following leonine verses were made: - Ni fallat fatum, - Scoti quocunque locatum Invenient lapidem, - regnare tenentur ibidem. Or fate is blind - or Scots shall find Where'er this stone - the royal throne. Camden's Perthshire. Edward I. had it brought to Westminster; and there this stone, called Jacob's pillar, and Jacob's pillow, is now placed under the chair on which the king sits when crowned! It would be as ridiculous to attempt to disprove the truth of this tradition, as to prove that the stone under the old chair in Westminster was the identical stone which served the patriarch for a bolster. And poured oil upon the top of it - Stones, images, and altars, dedicated to Divine worship, were always anointed with oil. This appears to have been considered as a consecration of them to the object of the worship, and a means of inducing the god or goddess to take up their residence there, and answer the petitions of their votaries. Anointing stones, images, etc., is used in idolatrous countries to the present day, and the whole idol is generally smeared over with oil. Sometimes, besides the anointing, a crown or garland was placed on the stone or altar to honor the divinity, who was supposed, in consequence of the anointing, to have set up his residence in that place. It appears to have been on this ground that the seats of polished stone, on which the kings sat in the front of their palaces to administer justice, were anointed, merely to invite the deity to reside there, that true judgment might be given, and a righteous sentence always be pronounced. Of this we have an instance in Homer, Odyss. lib. v., ver. 406-410: - Εκ δ' ελθων, κατ' αρ' ἑζετ' επι ξεστοισι λιθοσιν, Οἱ οἱ εσαν προπαροιθε θυραων ὑψηλαων, Δευκοι, αποστιλβοντες αλειφατος· οἱς επι μεν πριν Νηλευς ἱζεσκεν, θεοφιν μηστωρ αταλαντος. The old man early rose, walk'd forth, and sate On polish'd stone before his palace gate; With unguent smooth the lucid marble shone, Where ancient Neleus sate, a rustic throne. Pope. This gives a part of the sense of the passage; but the last line, on which much stress should be laid, is very inadequately rendered by the English poet. It should be translated, - Where Neleus sat, equal in counsel to the gods; because inspired by their wisdom, and which inspiration he and his successor took pains to secure by consecrating with the anointing oil the seat of judgment on which they were accustomed to sit. Some of the ancient commentators on Homer mistook the meaning of this place by not understanding the nature of the custom; and these Cowper unfortunately follows, translating "resplendent as with oil;" which as destroys the whole sense, and obliterates the allusion. This sort of anointing was a common custom in all antiquity, and was probably derived from this circumstance. Arnobius tells us that it was customary with himself while a heathen, "when he saw a smooth polished stone that had been smeared with oils, to kiss and adore it, as if possessing a Divine virtue." Si quando conspexeram lubricatum lapidem, et ex olivi unguine sordidatum (ordinatum) tanquam inesset vis prasens, adulabar, affabar. And Theodoret, in his eighty-fourth question on Genesis, asserts that many pious women in his time were accustomed to anoint the coffins of the martyrs, etc. And in Catholic countries when a church is consecrated they anoint the door-posts, pillars, altars, etc. So under the law there was a holy anointing oil to sanctify the tabernacle, laver, and all other things used in God's service, Exo 40:9, etc.”
Source
1849
A.D.
1774–1849
“A title. That is, a pillar or monument. (Challoner) — Or an altar, consecrated by that rite to the service of the true God. This he did without any superstition; as the Catholic Church still pours oil or chrism upon her altars, in imitation of Jacob. (Rabanus, Instit. i. 45.) If pagans did the like, this is no reason why we should condemn the practice. They were blamable for designing thus to worship false gods. (St. Clement of Alexandria, strom. vii; Apuleius, Florid. i; &c.) If Protestants pull down altars, under the plea of their being superstitious, we cannot but pity their ignorance or malice. (Worthington)”
Source
1871
A.D.
1871
“Jacob set up a stone, etc.--The mere setting up of the stone might have been as a future memorial to mark the spot; and this practice is still common in the East, in memory of a religious vow or engagement. But the pouring oil upon it was a consecration. Accordingly he gave it a new name, Beth-el, "the house of God" (Hos 12:4); and it will not appear a thing forced or unnatural to call a stone a house, when one considers the common practice in warm countries of sitting in the open air by or on a stone, as are those of this place, "broad sheets of bare rock, some of them standing like the cromlechs of Druidical monuments" [STANLEY].”
Source
1875
A.D.
Keil & Delitzsch Lutheran
1861–1875
“In the morning Jacob set up the stone at his head, as a monument (מצּבה) to commemorate the revelation he had received from God; and poured oil upon the top, to consecrate it as a memorial of the mercy that had been shown him there (visionis insigne μνημόσυνον, Calvin), not as an idol or an object or divine worship (vid., Exo 30:26.). - He then gave the place the name of Bethel, i.e., House of God, whereas (ואוּלם) the town had been called Luz before. This antithesis shows that Jacob gave the name, not to the place where the pillar was set up, but to the town, in the neighbourhood of which he had received the divine revelation. He renewed it on his return from Mesopotamia (Gen 35:15). This is confirmed by Gen 48:3, where Jacob, like the historian in Gen 35:6-7, speaks of Luz as the place of this revelation. There is nothing at variance with this in Jos 16:2; Jos 18:13; for it is not Bethel as a city, but the mountains of Bethel, that are there distinguished from Luz (see my Commentary on Jos 16:2). (Note: The fact mentioned here has often been cited as the origin of the anointed stones (βαίτυλοι) of the heathen, and this heathen custom has been regarded as a degeneration of the patriarchal. But apart from this essential difference, that the Baetulian worship was chiefly connected with meteoric stones (cf. F. von Dalberg, @fcb. d. Meteor-cultus d. Alten), which were supposed to have come down from some god, and were looked upon as deified, this opinion is at variance with the circumstance, that Jacob himself, in consecrating the stone by pouring oil upon it, only followed a custom already established, and still more with the fact, that the name βαίτυλοι, Βαιτόλια, notwithstanding its sounding like Bethel, can hardly have arisen from the name Beth-El, Gr. Βαιθήλ, since the τ for θ would be perfectly inexplicable. Dietrich derives βαιτύλιον from בּטּל, to render inoperative, and interprets it amulet.)”
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.