Genesis 28:12

And he dreamed, and, behold, a ladder was fixed in the ground, and the top of it reached to the height of heaven. And, behold, the two angels who went unto Sedom, and who had been expelled from the midst of them, because they had revealed the secrets of the Lord of the world; and being cast forth they had walked till the time that Jakob went out from the house of his father, and had accompanied him with kindliness unto Bethel, in that day had ascended to the high heavens, and said, Come, see Jakob the pious, whose likeness is inlaid in the throne of glory, and whom you have so greatly desired to behold. Then the rest of the angels of the holy Lord descended to look upon him.

The nature of a ladder [sulam] is a symbol [semel], or it is an explanation of the Gematria valuation of 'Sinai' (Genesis Rabbah 68:12-14). And Rabbi Shlomo HaSefardi said that 'ladder' hints at the highest soul and 'G-d's angels' hints at wise thoughts. Rabbi Joshua said that the reason for the ladder is that his (Jacob's) prayer rose on it and his salvation from the heavens came down on it. These explanations do not explain it in light of the prophecy of Zecharia (1:8), Amos (7:1), and Jeremiah (1:11). The reason for the ladder here is a metaphor, for nothing is concealed from G-d. Worldly things hang onto the heavens as though there is a ladder between them, upon which the angels go up to report on things after they have been walking along the earth. Likewise, it is written that other angels descend to fulfill G-d's tasks, like a king with his servants.

AND BEHOLD A LADDER SET UP ON THE EARTH AND THE TOP OF IT REACHED TO HEAVEN; AND BEHOLD THE ANGELS OF G-D ASCENDING AND DESCENDING ON IT. In a prophetic dream, He showed Jacob that whatever is done on earth is effected by means of the angels, and everything is by decree given to them by the Supreme One. The angels of G-d, whom the Eternal hath sent to walk to and fro through the earth, would not do anything minor or major until they return to present themselves before the Master of the whole earth, saying before Him, “We have traversed the earth,, Verse 11. and behold it dwells in peace, or is steeped in war and blood,” and He commands them to return, to descend to the earth and fulfill His charge. And He further showed him [Jacob] that He, blessed be He, stands above the ladder, and promises Jacob with supreme assurance to inform him that he will not be under the power of the angels, but he will be G-d’s portion, and that He will be with him always, as He said, And, behold, I am with thee, and will keep thee wherever thou goest for his [Jacob’s] excellence is superior to that of the other righteous ones of whom it is said, For He will give His angels charge over thee, to keep thee in all thy ways.
And in the opinion of Rabbi Eliezer the Great this vision was akin to the one seen by Abram at the time of the covenant “between the parts” for He also showed Jacob the dominion of the Four Kingdoms,. Jacob, like Abraham, was thus shown the events that will happen to his descendants during all the generations of their exiles. their ascent and descent. This is the meaning of angels of G-d (mentioned here), just as it is said in the visions of Daniel: the prince of the kingdom of Greece, and the prince of the kingdom of Persia., Verse 13. Similarly, the angels mentioned in the verse before us are to be understood as the representatives of the various nations. And He promised him that He, exalted be He, will be with him wherever he will go among the nations, and He will guard him and rescue him from them. Thus the Rabbis have said: “The Holy One, blessed be He, showed him the Four Kingdoms, their dominion and their destruction. He showed him the prince of the kingdom of Babylon ascending seventy rungs and then descending the ladder. Then He showed him the prince of the kingdom of Media ascending one hundred and eighty rungs and then descending. And then He showed him the prince of the kingdom of Edom ascending and not coming down. Jacob then said to the prince of Edom, Yet thou shalt be brought down to the nether-world. The Holy One, blessed be He, said to [the prince of Edom], Though thou make thy nest as high as the eagle, etc.”.

מוצב, which had been erected by others. When the Torah later speaks about ה' נצב in verse 13, the meaning is that He supported Himself, had not been placed there, [although the letter נ at the beginning of that word suggested a passive mode. Ed.] We encounter similar formulations with the words מוקטר offered as incense by others, or מוגש, presented by others in Maleachi 1,11 whereas the words נגש אל הערפל in Exodus 20,21 mean that Moses approached the cloud under his own initiative. Also the expression אשר אתה מראה בהר (with the vowel kametz under the letter א) is also referring to someone else showing Moses the image. (Exodus 25,40) On the other hand, the expression נראה in Genesis 12,7 refers to a vision generated by G’d Himself.

עולים ויורדים, according to the plain meaning of the text there is no need to read any special message into the word עולים, “climbing,” appearing before the word יורדים, “descending.”

והנה מלאכי אלוקים עולים ויורדים..והנה ה' נצב עליו, this foreshadowed the future when the “angels of G’d” the superpowers who had become very powerful in our world would begin their decline and end up at the bottom of the rungs of the ladder. The Lord G’d Who stood above the ladder is the symbol of the promise that G’d will never abandon the Jewish people, as we know from Jeremiah 46,28 כי אעשה כלה בכל הגויים ואותך לא אעשה כלה, “even when I utterly destroy all the gentile nations, I will not destroy you.”

ויחלום, והנה סלם, there are many different opinions among our sages how best to explain this dream, as well as among other readers of the Bible. Some say that this was a preview of the revelation at Mount Sinai and that the numerical value of the letters in the word סלם equals that of the word סיני (130)

מוצב ארצה וראשו מגיע השמימה, at the revelation of Mount Sinai the angels and the Jewish people were of the same spiritual level, even though Moses and Aaron are described as ascending towards heaven, whereas the angels were descending towards earth. [the thought that Aaron too was ascending toward heaven is quoted in Shemot Rabbah 19,3. Ed.]

והנה סלם, “and here there was a ladder;” the numerical value of the letters in the word סלם=130, the same numerical value as the letters in the word סיני, “Sinai;” This was a hint that the Jewish people would receive the Torah at Mount Sinai. (B’reshit Rabbah, 68,12)

והנה סולם מוצב ארצה , “and (in his dream) he saw a ladder planted on the earth;” at the burning bush, where Moses had his first communication from G–d, the fire from that bush rose to the heart of the heavens. At that time Moses was told specifically that the Israelites, Yaakov’s descendants shall worship G–d there.

והנה מלאכי אלוקים, “and lo, prophets of G–d,” i.e. Moses and Aaron, would climb up and down there.

והנה ה' נצב עליו, and lo, the Lord was standing on top of it. This is what is meant when in Exodus 19,20, the Torah writes that the Lord descended to Mount Sinai.

'ויאמר אני ה, “He said: I am the Lord, etc.;” this parallels what Hashem said at the beginning of the Decalogue in Exodus, 20,2. An alternate interpretation; the word סולם is to be understood literally, as “ladder;” the words: והנה מלאכי אלוקים, describe G–d as showing Yaakov the spiritual representative of Egypt in the celestial spheres, (as also stated in the commentary by Nachmanides) and how that empire after first rising to great heights was brought down completely. A third interpretation: these angels were the angels that had come to Sodom to rescue Lot, and had been demoted by G–d after describing themselves to Lot as initiating the destruction of Sodom, by telling Lot that they had come to destroy Sodom, as if they had the power to do this instead of simply carrying out G–d’s command. (Genesis 19,14,) They had also revealed some of G–d’s secrets without having permission to do so. According to tradition, their punishment had been to be banned from the celestial regions. Now, 138 years later, they had been allowed to return to their places in the celestial regions.