"it is not to be supposed that, because in this night and darkness [the soul] has passed through so many tempests of afflictions, doubts, fears and horrors, as has been said, it has for that reason run any risk of being lost. On the contrary, it says, in the darkness of this night it has gained itself. For in the night it has freed itself and escaped subtly from its enemies, who were continually hindering its progress. For in the darkness of the night it changed its garments and disguised itself with three liveries and colours which we shall describe hereafter; and went forth by a very secret ladder, which none in the house knew, the which ladder, as we shall observe likewise in the proper place, is living faith. By this ladder the soul went forth in such complete hiding and concealment, in order the better to execute its purpose, that it could not fail to be in great security; above all since in this purgative night the desires, affections and passions of the soul are put to sleep, mortified and quenched, which are they that, when they were awake and alive, consented not to this."
St. John of the Cross, The dark night of the soul II.15, ed. & trans. E. Allison Peters. "the spiritual and the sensual desires are put to sleep and mortified, so that they can experience nothing, either Divine or human; the affections of the soul are oppressed and constrained, so that they can neither move nor find support in anything; the imagination is bound and can make no useful reflection; the memory is gone; the understanding is in darkness, unable to understand anything; and hence the will likewise is arid and constrained and all the faculties are void and useless; and in addition to all this a thick and heavy cloud is upon the soul, keeping it in affliction, and, as it were, far away from God. It is in this kind of ‘darkness’ that the soul says here it travelled 'securely'" (II.16).