1Cor 10:31

“Flee evil arts; but all the more discourse in public regarding them. Speak to my sisters, that they love the Lord, and be satisfied with their husbands both in the flesh and spirit. In like manner also, exhort my brethren, in the name of Jesus Christ, that they love their wives, even as the Lord the Church. If any one can continue in a state of purity, to the honour of Him who is Lord of the flesh, let him so remain without boasting. If he begins to boast, he is undone; and if he reckon himself greater than the bishop, he is ruined. But it becomes both men and women who marry, to form their union with the approval of the bishop, that their marriage may be according to God, and not after their own lust. Let all things be done to the honour of God.”

“Nor is it suitable to eat and to drink simultaneously. For it is the very extreme of intemperance to confound the times whose uses are discordant. And "whether ye eat or drink, do all to the glory of God," aiming after true frugality, which the Lord also seems to me to have hinted at when He blessed the loaves and the cooked fishes with which He feasted the disciples, introducing a beautiful example of simple food.”

“For conscience' sake, then, we are to abstain from what we ought to abstain. "Conscience, I say, not his own," for it is endued with knowledge, "but that of the other," lest he be trained badly, and by imitating in ignorance what he knows not, he become a despiser instead of a strong-minded man. "For why is my liberty judged of by another conscience? For if I by grace am a partaker, why am I evil spoken of for that for which I give thanks? Whatever ye do, do all to the glory of God"—what you are commanded to do by the rule of faith.”

“"Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God." Perceivest thou how from the subject before him, he carried out the exhortation to what was general, giving us one, the most excellent of all aims, that God in all things should be glorified? "What then? whereas we have known Christ and give thanks, while they blaspheme, shall we therefore abandon this custom also?" Far from it. For the thing is not the same. For in the one case, great is our gain from bearing the reproach; but in the other, there will be no advantage. Wherefore also he said before, "for neither if we eat, are we the better; nor if we eat not, are we the worse." And besides this too he showed that the thing was to be avoided, so that even on another ground ought they to be abstained from, not on this account only but also for the other reasons which he assigned.”

“'And meditates on his law day and night.' [Psalm 1:2] The psalmist has already mentioned three things one must not do: follow the Counsel of the wicked; stand in the way of sinners; sit in the company of the insolent. These three things we must not do, but there are also two things that we must do, for it will not be sufficient for us to shun evil unless we seek good. 'But delights in the law of the Lord.' The psalm does not say fears the law, but delights in the law. There are many who observe the law through fear, but fear as a motive for action is far from meritorious. 'But delights in the law of the Lord' - wholeheartedly he obeys the Lord's command. 'And meditates on his law day and night.' Mere words cannot express adequately what the mind conceives. 'But delights in the law of the Lord.' Some one may say: 'Look, I want to obey the law of God, and so because I want to obey, I am happy.' But consider the words that follow. It is not enough to want the law of God, but one must meditate on His law day and night. 'Meditate day and night.' Someone else may object: 'This is too much for human nature to endure, for one must walk, and drink, and eat, and sleep, and perform all the other necessities of life. How, then, meditate on the law of God day and night, and especially since the Apostle says: "Pray without ceasing"? [1 Thess 5:17] How can I be praying during the time that I am sleeping?' Meditation on the law does not consist in reading, but in doing, just as the Apostle says in another place: 'Whether you eat or drink, or do anything else, do all for the glory of God. [1 Cor. 10:31] Even if I merely stretch forth my hand in alms giving, I am meditating on the law of God; if I visit the sick, my feet are meditating on the law of God; if I do what is prescribed, I am praying with my whole body what others are praying with their lips. The Jews, indeed, prayed with their lips, but our prayer is works.”

“He wishes, then, for all our actions to be accomplished with Christ as companion and witness, that we may do good things for him as the author and avoid what is evil for the sake of his fellowship. One who knows that Christ is his companion is ashamed to do evil. In good things, however, Christ is our helper, and in the face of evil things he is our defender.”

“All things, he says, do to the glory of God: for by your present conduct God is not glorified, but rather blasphemed. And someone eats and drinks to the glory of God when he does not cause anyone to stumble by it, and does it not out of gluttony or love of pleasure, but in order to prepare his body for the practice of virtue; and in general, someone does every deed to the glory of God when he neither harms another through causing stumbling, nor himself, as, for example, one who acts out of people-pleasing, or out of some passionate thought.”

“If, moreover, it chance that we go to a place in which there are no Christians, and it be important for us to stay there a few days, let us be "wise as serpents, and harmless as doves;" [Matthew 10:16] and let us "not be as the foolish, but as the wise," [Ephesians 5:15] in all the self-restraint of the fear of God, that God may be glorified in everything through our Lord Jesus Christ, through our chaste and holy behaviour. For, "whether we eat, or drink, or do anything else, let us do it as for the glory of God." [1 Corinthians 10:31]”