The human ideal of continence, I mean that which is set forth by Greek philosophers, teaches that one should fight desire and not be subservient to it so as to bring it to practical effect. But our ideal is not to experience desire at all … This chastity cannot be attained in any other way except by God’s grace. That was why he said “Ask and it shall be given you.” This grace was received even by Moses, though clothed in his needy body, so that for forty days he felt neither thirst nor hunger… Where there is light there is no darkness. But where there is inward desire, even if it goes no further than desire and is quiescent so far as bodily action is concerned, union takes place in thought with the object of desire, although that object is not present.
Our general argument concerning marriage, food, and other matters, may proceed to show that we should do nothing from desire. Our will is to be directed only towards that which is necessary [beneficial]. For we are children not of desire but of will. A man who marries for the sake of begetting children must practise continence so that it is not desire he feels for his wife, whom he ought to love, and that he may beget children with a chaste and controlled will.
For we have learnt not to “have thought for the flesh to fulfil its desires.” We are to “walk honourably as in the way”, that is in Christ and in the enlightened conduct of the Lord’s way, “not in revelling and drunkenness, not in debauchery and lasciviousness, not in strife and envy.”
And Valentine says in the letter to Agathopus: “Jesus endured all things and was continent; it was his endeavour to earn a divine nature; he ate and drank in a manner peculiar to himself, and the food did not pass out of his body. Such was the power of his continence that food was not corrupted within him; for he himself was not subject to the process of corruption.”
–The Stromata III.VII