Here are some excerpts from Swedenborg's "Arcana Coelestia" that help explain the inner meaning of this chapter:

AC 1778. Here in the internal sense are continued the things concerning the Lord after He had endured in childhood the most severe combats of temptations, which were directed against the love which He cherished toward the whole human race, and in particular toward the church; and therefore being anxious concerning their future state a promise was made Him but it was shown at the same time what the state of the church would become toward its end when it would begin to expire; but that still a new church should revive, which would take the place of the former, and the heavenly kingdom would be immensely increased.

AC 1779. The Lord‘s consolation after the combats of temptations described (verse 1).

AC 1780. The Lord’s complaint respecting the church, that it was in externals only (verses 2, 3). A promise concerning an internal church (verse 4). Concerning its multiplication (verse 5). That the Lord is righteousness (verse 6). And unto Him alone belongs the kingdom in the heavens and on earth (verse 7).

AC 1781. And as He desired to be assured that the human race would be saved (verse 8), it was shown Him how the case is with the church, in general, specifically, and in particular (verses 9 to 17).

AC 1782. The "heifer," "she-goat," and "ram," are the representatives of the celestial things of the church; the "turtledove" and the "young pigeon" are the representatives of its spiritual things (verse 9). The church was on one side, and the Lord on the other (verse 10). The Lord would dissipate evils and falsities (verse 11). But the falsities would still infest it (verses 12, 13). From these there should be deliverance (verse 14). Thus the Lord received consolation (verse 15). But that evils would take possession (verse 16). And at last nothing hut falsities and cupidities would reign (verse 17). Then would come the Lord‘s kingdom, and a new church, the extension of which is described (verse 18). The falsities and evils to be expelled from it are the nations named (verses 19 to 21).

1891. The Lord's first rational was conceived according to order through the inflowing, that is, through the joining of the Internal Man to the life of the affection for knowledge belonging to the External, verses 1-3. But because it was born from the External Man, it was by nature such as despised intellectual truth, verse 4. Therefore the Lord thought about it being brought into subjection, verses 5-9, and that once it had been brought into subjection it would become spiritual and celestial, verses 10-11. The nature of it if it had not been brought into subjection is described, verse 1a. The Lord's insight from His Interior Man into the cause, verses 13-14. Thus the rational as to its nature is described; also the Lord's state when this rational began, verses 15-16.