From what has been said it may be seen in some measure how great a distance there is between all that the creatures are in themselves and that which God is in Himself, and how souls that set their affections upon any of these creatures are at as great a distance as they from God; for, as we have said, love produces equality and likeness….

Wherefore, it is supreme ignorance for the soul to think that it will be able to pass to this high estate of union with God if first it void not the desire of all things, natural and supernatural, which may hinder it, according as we shall explain hereafter.

For there is the greatest possible distance between these things and that which comes to pass in this estate, which is naught else than transformation in God. For this reason Our Lord, when showing us this path, said through Saint Luke “he that renounces not all things that he possesses with his will cannot be my disciple” (Lk. 14:33).

And this is evident; for the doctrine that the Son of God came to teach was contempt for all things, whereby a man might receive as a reward the Spirit of God in himself. For, as long as the soul rejects not all things, it has no capacity to receive the Spirit of God in pure transformation.

John of the Cross (1542-1591): Ascent of Mount Carmel, 2,5.