The Adornment of the Spiritual Marriage, by Jan van Ruysbroeck, , at sacred-texts.com
And after this there follows the union without distinction. For you must apprehend the Love of God not only as an outpouring with all good, and as drawing back again into the Unity; but it is also, above all distinction, an essential fruition in the bare Essence of the Godhead. And in consequence of this enlightened men have found within themselves an essential contemplation which is above reason and without reason, and a fruitive tendency which pierces through every condition and all being, and through which they immerse themselves in a wayless abyss of fathomless beatitude, where the Trinity of the Divine Persons possess Their Nature in the essential Unity. Behold, this beatitude is so onefold and so wayless that in it every essential gazing, tendency, and creaturely distinction cease and pass away. For by this fruition, all uplifted spirits are melted and noughted in the Essence of God, Which is the superessence of all essence. There they fall from themselves into a solitude and an ignorance which are fathomless; there all light is turned to darkness; there the three Persons give place to the Essential Unity, and abide without distinction in fruition of essential blessedness. This blessedness is essential to God, and superessential to all creatures; for no created essence can become one with God's Essence and pass away from its own substance. For so the creature would become God, which is impossible; for the Divine Essence can neither wax nor wane, nor can anything be added to It or taken from It. Yet all loving spirits are one fruition and one blessedness with God without distinction; for that beatific state, which is the fruition of God and of all His beloved, is so simple and onefold that therein neither Father, nor Son, nor Holy Ghost, is distinct according to the Persons, neither is any creature. But all enlightened spirits are here lifted up above themselves into a wayless fruition, which is an abundance beyond all the fulness that any creature has ever received or shall ever receive. For there all uplifted spirits are, in their superessence, one fruition and one beatitude with God without distinction; and there this beatitude is so onefold that no distinction can enter into it. And this was prayed for by Christ when He besought His Father in heaven that all His beloved might be made perfect in one, even as He is one with the Father through the Holy Ghost: even so He prayed and besought that He in us and we in Him and His heavenly Father might be one in fruition through the Holy Ghost. And this I think the most loving prayer which Christ ever made for our blessedness.