when the intellect has been perfected, it unites wholly with God and is illumined by divine light, and the most hidden mysteries are revealed to it. Then it truly learns where wisdom and power lie… While it is still fighting against the passions it cannot as yet enjoy these things… But once the battle is over and it is found worthy of spiritual gifts, then it becomes wholly luminous, powerfully energized by grace and rooted in the contemplation of spiritual realities. A person in whom this happens is not attached to the things of this world but has passed from death to life.

(The Philokalia)