If we keep the path of virtue undefiled through devout and true knowledge, and do not deviate to either side, we will experience the advent of God revealed to us because of our dispassion. For 'I will sing a psalm and in a pure path I will understand when Thou wilt come to me' (cf. Ps. 101:1-2). The psalm stands for virtuous conduct; understanding indicates the spiritual knowledge, gained through virtue, by means of which we perceive God's advent, when we wait for the Lord vigilant in the virtues.
Maximus the ConfessorAs long as I remain imperfect and refractory, neither obeying God by practising the commandments nor becoming perfect in spiritual knowledge, Christ from my point of view also appears imperfect and refractory because of me. For I diminish and cripple Him by not growing in spirit with Him, since I am 'the body of Christ and one of its members' (I Cor. 12:27).
Maximus the ConfessorOur forefather Adam... used his freedom to turn toward what was worse and to direct his desire away from what had been permitted to what was forbidden. It was in his power 'to be united to the Lord and become one spirit with God...' (I Cor. 6:15). But Adam was deceived and chose to cut himself off voluntarily from God's happy end for him, preferring by his own free choice to be drawn down to the earth (cf. Gen. 2:17) than to become God by grace.
Maximus the Confessor