becoming just and holy, living by wisdom

Since Evil is here, "haunting this world by necessary law,"

and it is the Soul's design to escape from Evil, we must escape hence.

But what is this escape?

"In attaining Likeness to God," we read. And this is explained as "becoming just and holy, living by wisdom," the entire  nature grounded in Virtue.
 
Plotinus

PURIFICATION

The question is substantially this: how far does purification dispel the two orders of passion — anger, desire and the like, with grief and its kin — and in what degree the disengagement from the body is possible.
Disengagement means simply that the soul withdraws to its own place.
It will hold itself above all passions and affections. Necessary pleasures and all the activity of the senses it will employ only for medicament and assuagement lest its work be impeded. Pain it may combat, but, failing the cure, it will bear meekly and ease it by refusing assent to it. All passionate action it will check: the suppression will be complete if that be possible, but at worst the Soul will never itself take fire but will keep the involuntary and uncontrolled outside its precincts and rare and weak at that. The Soul has nothing to dread, though no doubt the involuntary has some power here too: fear therefore must cease, except so far as it is purely monitory. What desire there may be can never be for the vile; even the food and drink necessary for restoration will lie outside of the Soul’s attention, and not less the sexual appetite: or if such desire there must be, it will turn upon the actual needs of the nature and be entirely under control; or if any uncontrolled motion takes place, it will reach no further than the imagination, be no more than a fleeting fancy.
The Soul itself will be inviolately free and will be working to set the irrational part of the nature above all attack, or if that may not be, then at least to preserve it from violent assault, so that any wound it takes may be slight and be healed at once by virtue of the Soul’s presence, just as a man living next door to a Sage would profit by the neighbourhood, either in becoming wise and good himself or, for sheer shame, never venturing any act which the nobler mind would disapprove.
There will be no battling in the Soul: the mere intervention of Reason is enough: the lower nature will stand in such awe of Reason that for any slightest movement it has made it will grieve, and censure its own weakness, in not having kept low and still in the presence of its lord.

Plotinus

Living Gold

Let us consider a soul, not one that has appropriated the unreasoned desires and impulses of the bodily life, or any other such emotion and experience, but one that has cast all this aside, and as far as possible has no commerce with the bodily. Such a soul demonstrates that all evil is accretion, alien, and that in the purged soul the noble things are immanent, wisdom and all else that is good, as its native store.
If this is the soul once it has returned to its self, how deny that it is the nature we have identified with all the divine and eternal? Wisdom and authentic virtue are divine, and could not be found in the chattel mean and mortal: what possesses these must be divine by its very capacity of the divine, the token of kinship and of identical substance.
Hence, too, any one of us that exhibits these qualities will differ but little as far as soul is concerned from the Supernals; he will be less than they only to the extent in which the soul is, in him, associated with body.
This is so true that, if every human being were at that stage, or if a great number lived by a soul of that degree, no one would be so incredulous as to doubt that the soul in man is immortal. It is because we see everywhere the spoiled souls of the great mass that it becomes difficult to recognize their divinity and immortality.
To know the nature of a thing we must observe it in its unalloyed state, since any addition obscures the reality. Clear, then look: or, rather, let a man first purify himself and then observe: he will not doubt his immortality when he sees himself thus entered into the pure, the Intellectual. For, what he sees is an Intellectual-Principle looking on nothing of sense, nothing of this mortality, but by its own eternity having intellection of the eternal: he will see all things in this Intellectual substance, himself having become an Intellectual Kosmos and all lightsome, illuminated by the truth streaming from The Good, which radiates truth upon all that stands within that realm of the divine.
Thus he will often feel the beauty of that word “Farewell: I am to you an immortal God,” for he has ascended to the Supreme, and is all one strain to enter into likeness with it.
If the purification puts the human into knowledge of the highest, then, too, the science latent within becomes manifest, the only authentic knowing. For it is not by running hither and thither outside of itself that the soul understands morality and right conduct: it learns them of its own nature, in its contact with itself, in its intellectual grasp of itself, seeing deeply impressed upon it the images of its primal state; what was one mass of rust from long neglect it has restored to purity.
Imagine living gold: it files away all that is earthy about it, all that kept it in self-ignorance preventing it from knowing itself as gold; seen now unalloyed it is at once filled with admiration of its worth and knows that it has no need of any other glory than its own, triumphant if only it be allowed to remain purely to itself.

Plotinus