Clement of Alexandria

To attain the knowledge of God is impossible for those who are still under the control of their passions. Therefore they cannot attain the salvation they hope for as they have not obtained any knowledge of God. He who fails to attain this end is clearly subject to the charge of being ignorant of God, and ignorance of God is shown by a man's manner of life. It is absolutely impossible at the same time to be a man of understanding and not to be ashamed to gratify the body. Nor can the view that pleasure is the supreme Good be reconciled with the view that only the beautiful is good, or that only the Lord is beautiful, and God alone is good and is alone to be loved. "You are circumcised in Christ with a circumcision not done with hands, which consists rather in the putting away of the carnal body, in the circumcision of Christ." "If you then are risen with Christ, seek those things which are above; have in mind higher things, not earthly things. For you are dead, and your life is hid with Christ in God" -- but not the fornication which they practice. "Mortify therefore your earthly members, fornication, uncleanness, passion, lust; for on account of these wrath is coming." Let them also therefore "put away anger, wrath, wickedness, blasphemy, filthy talk from their mouth, putting off the old man with its lusts, and putting on the new man which is renewed to possess full knowledge according to the image of him who created it."