Rapture means the total elevation of the soul’s powers towards the majesty of divine glory, disclosed as an undivided unity. Or again rapture is a pure and all-embracing ascent towards the limitless power that dwells in light. Ecstasy is not only the heavenward ravishing of the soul’s powers; it is also complete transcendence of the sense-world itself. Intense longing for God–there are two forms of it–is a spiritual intoxication that arouses our desire.
As just remarked, there are two main forms of ecstatic longing for God: one within the heart and the other an enravishment taking one beyond oneself. The first pertains to those who are still in the process of achieving illumination, the second to those perfected in love. Both, acting on the intellect, transport it beyond the sense-world. Such longing for the divine is truly a spiritual intoxication, impelling natural thoughts towards higher states and detaching the senses from their involvement with visible things.
~St Gregory of Sinai
Prayerful Life 