Man Ability to be Elevated Rationally in Three Degrees

Selection from Divine Love and Wisdom ~ Emanuel Swedenborg

Every man is born into a capacity to understand truths even to the inmost degree in which the angels of the third heaven are; for the human understanding, rising up by continuity around the two higher degrees, receives the light of their wisdom .... Therefore man has the ability to become rational according to his elevation; if raised to the third degree he becomes rational from that degree, if raised to the second degree he becomes rational from that degree, if not raised he is rational in the first degree. It is said that he becomes rational from those degrees, because the natural degree is the general receptacle of their light. The reason why man does not become rational to the height that he might is, that love, which is of the will, cannot be raised in the same manner as wisdom, which is of the understanding. Love, which is of the will, is raised only by fleeing from evils as sins, and then by goods of charity, which are uses, which the man thereafter performs from the Lord. Consequently, when love, which is of the will, is not at the same time raised, wisdom, which is of the understanding, however it may have ascended, falls back again down to its own love. Therefore, if man's love is not at the same time raised into the spiritual degree, he is rational only in the lowest degree. From all this it can be seen that man's rational is in appearance as if it were of three degrees, a rational from the celestial, a rational from the spiritual, and a rational from the natural; also that rationality, which is the capacity whereby man is elevated, is still in man whether he be elevated or not.

[It has been said that every man is born into that capacity, namely, rationality, but by this is meant every man whose externals have not been injured by some accident, either in the womb, or by some disease after birth, or by a wound inflicted on the head, or in consequence of some insane love bursting forth, and breaking down restraints. In such the rational cannot be elevated; for life, which is of the will and understanding, has in such no bounds in which it can terminate, so disposed that it can produce outmost acts according to order; for life acts in accordance with outmost determinations, though not from them. That there can be no rationality with infants and children. ...]

(Divine Love and Wisdom 258 - 259)

Man Created to Receive Love and Wisdom

From Conjugial Love ~ Emanuel Swedenborg

... man was created to receive love and wisdom from God, and yet all likeness as if it were from himself, and this for the sake of reception and conjunction; and that for this reason man is not born into any love, nor into any knowledge, nor even into any power of loving or becoming wise of himself; and therefore if he ascribes every good of love and every truth of wisdom to God he becomes a living man; but if he ascribes them to himself he becomes a dead man. ...

(Conjugial Love 136)

Where the 'Erroneous Belief' Came of Man Being a Divine Spark of God

From Conjugial Love ~ Emanuel Swedenborg

...
What is meant by "the tree of life," what by "the tree of knowledge of good and evil," and what by "eating" of them?
...
A tree signifies man; and its fruit signifies the good of life. By the tree of life, therefore, is meant man living from God, or God living in man. And as love and wisdom, and charity and faith, or good and truth, make the life of God in man, these are meant by the tree of life, and from these man has life eternal. The like is signified by the tree of life of which it is given to eat, in Revelation 2:7:-  He that hath an ear, let him hear what the Spirit saith unto the churches; To him that overcometh will I give to eat of the tree of life, which is in the midst of the paradise of God.

And Revelation 22:2 & 14:-  In the midst of the street of it, and on either side of the river, was there the tree of life, which bare twelve manner of fruits, and yielded her fruit every month: and the leaves of the tree were for the healing of the nations.  Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city.

By the tree of the knowledge of good and evil is signified the man who believes that he lives of himself, and not from God; thus, that love and wisdom, charity and faith, that is, good and truth, are in man, his own, and not of God, believing this, because he thinks and wills, and speaks and acts in all similitude and appearance as if from himself. And because from this belief man persuades himself that God has imparted Himself or infused His Divine into him, therefore the serpent said:- God doth know that in the day that ye eat of the fruit of that tree your eyes shall be opened, and ye shall be as God, knowing good and evil (Gen. 3:5).

By eating of those trees is signified reception and appropriation; by eating of the tree of life, the reception of life eternal; and by eating of the tree of the knowledge of good and evil, the reception of condemnation, and therefore also both Adam and his wife, together with the serpent, were accursed.

By the serpent is meant the devil as to the love of self and the pride of one's own intelligence. This love is the possessor of that tree; and men who are in pride from this love are such trees. They therefore are in a monstrous error who believe that Adam was wise and did good from himself, and that this was his state of integrity; when in fact Adam was himself accursed on account of that belief, for this is signified by his eating of the tree of the knowledge of good and evil. Therefore he then fell from the state of integrity, in which he was by virtue of believing that he was wise and did good from God, and not at all from himself; for this is meant by eating of the tree of life.

The Lord alone when He was in the world was wise of Himself and did good from Himself; because the Divine Itself was in Him and was His by nativity. And therefore also by His own power He became the Redeemer and Saviour.

From all that had been said they formed this conclusion: That by the tree of life, and by the tree of the knowledge of good and evil, and by eating of them, is signified that life with man is God in him; and that then it is heaven to him and eternal life. And that death to man is the persuasion and belief that the life he has is not God, but himself; from which belief comes hell to him and eternal death, which is damnation.

(Conjugial Love 135)