2 Kings 2:11-13 A chariot of fire & horses of fire

'And it came to pass as they still went on, and talked, that behold, there appeared a chariot of fire, and horses of fire, and parted them both asunder; and Elijah went up by a whirlwind into heaven. And Elisha saw it... And he saw him no more... He took up also the mantle of Elijah that fell from him.'

The chariot of fire and the horses of fire I personally believe represent the strait and narrow Way to travel up into heaven, which is a World of Divine Fire, while still in the physical body. Jesus also demonstrated that this was possible by using the Violet Consuming Flame to raise the vibrations of His dead physical body up to the point that He could ride the Violet Flame up into heaven.

Emanuel Swedenborg gives a different interpretation of the chariot of fire and the horses of fire: 

White Horse, by Emanuel Swedenborg, [1758], tr. by John Whitehead [1892], at sacred-texts.com

3.

That a horse signifies the understanding, is from no other source than from the representatives in the spiritual world. In that world horses are frequently seen, and persons sitting upon horses, and also chariots; and there everyone knows that they signify intellectual and doctrinal things. I have often observed, when any were thinking from their understanding, that at such times they appeared as if riding on horses; their meditation was thus represented before others, they themselves not knowing it. There is also a place there, where many assemble who think and speak from the understanding concerning the truths of doctrine; and when others approach, they see, the whole plain full of chariots and horses; and novitiate [the period or state of being a novice, esp. in a religious order] spirits, who wonder whence this is, are instructed that it is an appearance resulting from their intellectual thought. That place is called the assembly of the intelligent and the wise. I have likewise seen bright horses and chariots of fire, when some were taken up into heaven, which was a sign that they were then instructed in the truths of heavenly doctrine, and became intelligent, and thus were taken up; on seeing which, it occurred to my mind, what is signified by "the chariot of fire and the horses of fire by which Elijah was taken up into heaven;" and what is signified by "the horses and chariots of fire" that were seen by the young man of Elisha, when his eyes were opened.

4.

That such is the signification of "chariots" and "horses" was well known in the ancient churches; for those churches were representative churches, and with those who were in them, the science of correspondences and representations was the chief of all sciences.

Apocalypse Revealed, by Emanuel Swedenborg, [1766], tr. by John Whitehead [1912], at sacred-texts.com

875.

...Awaking one morning from sleep, I saw two angels descending out of heaven, one from the southern quarter of heaven and the other from the eastern quarter of heaven, both in chariots to which which white horses were harnessed. The chariot in which the angel from the southern quarter of heaven was conveyed, shone like silver, and the chariot in which the angel from the eastern quarter of heaven was conveyed, shone like gold; and the reins which they held in their hands were refulgent as from the flamy light of the dawn. Thus these two angels were seen by me at a distance; but when they came nearer, they did not appear in a chariot, but in their angelic form which is human. He who came from the eastern quarter of heaven, was clad in a bright purple garment, and he who came from the southern quarter of heaven in a garment of hyacinthine blue. When they were below under the heavens, they ran to meet each other, as if they strove which should be first, and mutually embraced and kissed each other. I heard that these two angels, when they lived on earth, had been conjoined in interior friendship; but now one was in the eastern heaven and the other in the southern heaven. In the eastern heaven are they who are in love from the Lord; but in the southern heaven are they who are in wisdom from the Lord. [2] When they had spoken some time about the magnificence of their heavens, this came up in their discourse, whether heaven in its essence is love, or whether it is wisdom. They immediately agreed that one is of the other, but discussed which was the original. The angel who was from the heaven of wisdom asked the other, what love is; to which he replied, "That love, originating from the Lord as a sun, is the vital heat of angels and men, thus their life: that the derivations of love are called affections; and that by these are produced perceptions and thus thoughts, whence it follows that wisdom in its origin is love..." After discoursing together for some time on these and such like subjects, the angels departed, and as they retired each to his own heaven, their heads appeared encompassed with stars: and when they were some distance from me, they again seemed to be borne in chariots as before...

Conjugial Love, by Emanuel Swedenborg, [1768] at sacred-texts.com

42.

...RESPECTING THE SPIRITUAL WORLD. ...One morning I was looking upwards into heaven and saw over me three expanses one above another; I saw that the first expanse, which was nearest, opened, and presently the second which was above it, and lastly the third which was highest; and... I perceived, that above the first expanse were the angels who compose the first or lowest heaven; above the second expanse were the angels who compose the second or middle heaven; and above the third expanse were the angels who compose the third or highest heaven. I wondered at first what all this meant: and presently I heard from heaven a voice as of a trumpet, saying, "We have perceived, and now see, that you are meditating on CONJUGIAL [matrimonial —used to distinguish the Swedenborgian conception of marriage as a spiritual union] LOVE; and we are aware that no one on earth as yet knows what true conjugial love is in its origin and in its essence; and yet it is of importance that it should be known: therefore it has pleased the Lord to open the heavens to you in order that illustrating light and consequent perception may flow into the interiors of your mind. With us in the heavens, especially in the third heaven, our heavenly delights are principally derived from conjugial love; therefore, in consequence of leave granted us, we will send down to you a conjugial pair for your inspection and observation;" and lo! instantly there appeared a chariot descending from the highest or third heaven, in which I saw one angel; but as it approached I saw therein two. The chariot at a distance glittered before my eyes like a diamond, and to it were harnessed young horses white as snow; and those who sat in the chariot held in their hands two turtle-doves, and called to me, saying, "Do you wish us to come nearer to you? but in this case take heed, lest the radiance, which is from the heaven whence we have descended, and is of a flaming quality, penetrate too interiorly... I replied, "I will observe your caution; come nearer:" so they came nearer; and lo! it was a husband and his wife; who said, "We are a conjugial pair: we have lived happy in heaven from the earliest period, which you call the golden age, and have continued during that time in the same bloom of youth in which you now see us." I viewed each of them attentively, because I perceived they represented conjugial love in its life and in its decoration; in its life in their faces, and in its decoration in their raiment; for all the angels are affections [feelings] of love in a human form. The ruling affection itself shines forth from their faces; and from the affection, and according to it, the kind and quality of their raiment is derived and determined: therefore it is said in heaven, that every one is clothed by his own affection. The husband appeared of a middle age, between manhood and youth: from his eyes darted forth sparkling light derived from the wisdom of love; by virtue of which light his face was radiant from its inmost ground; and in consequence of such radiance the surface of his skin had a kind of refulgence, whereby his whole face was one resplendent comeliness. He was dressed in an upper robe which reached down to his feet and underneath it was a vesture of hyacinthine blue, girded about with a golden band, upon which were three precious stones, two sapphires on the sides, and a carbuncle in the middle; his stockings were of bright shining linen, with threads of silver interwoven, and his shoes were of velvet: such was the representative form of conjugial love with the husband. With the wife it was this; I saw her face, and I did not see it; I saw it as essential beauty, and I did not see it because this beauty was inexpressible; for in her face there was a splendor of flaming light, such as the angels in the third heaven enjoy, and this light made my sight dim; so that I was lost in astonishment: she observing this addressed me, saying, "What do you see?" I replied, "I see nothing but conjugial love and the form thereof; but I see, and I do not see." Hereupon she turned herself sideways from her husband; and then I was enabled to view her more attentively. Her eyes were bright and sparkling from the light of her own heaven, which light, as was said, is of a flaming quality, which it derives from the love of wisdom; for in that heaven wives love their husbands from their wisdom, and in it, and husbands love their wives from that love of wisdom and in it, as directed towards themselves; and thus they are united. This was the origin of her beauty; which was such that it would be impossible for any painter to imitate and exhibit it in its form, for he has no colors bright and vivid enough to express its lustre; nor is it in the power of his art to depict such beauty: her hair was arranged in becoming order so as to correspond with her beauty; and in it were inserted diadems [a jewelled crown or headband worn as a symbol of sovereignty] of flowers; she had a necklace of carbuncles, from which hung a rosary of chrysolites; and she wore pearl bracelets: her upper robe was scarlet, and underneath it she had a purple stomacher, [a V-shaped piece of decorative cloth, worn over the chest and stomach] fastened in front with clasps of rubies; but what surprised me was, that the colors varied according to her aspect in regard to her husband, being sometimes more glittering, sometimes less; if she were looking towards him, more, if sideways, less. When I had made these observations, they again talked with me; and when the husband was speaking, he spoke at the same time as from his wife; and when the wife was speaking, she spoke at the same time as from her husband; such was the union of their minds from whence speech flows; and on this occasion I also heard the tone of voice of conjugial love; inwardly it was simultaneous, and it proceeded from the delights of a state of peace and innocence. At length they said, "We are recalled; we must depart;"and instantly they again appeared to be conveyed in a chariot as before  and instantly they again appeared to be conveyed in a chariot as before. They went by a paved way through flowering shrubberies, from the beds of which arose olive and orange-trees laden with fruit: and when they approached their own heaven, they were met by several virgins, who welcomed and introduced them.