1Now accept one who is weak in faith, but not for disputes over opinions. 2One man has faith to eat all things, but he who is weak eats only vegetables. 3Don’t let him who eats despise him who doesn’t eat. Don’t let him who doesn’t eat judge him who eats, for God has accepted him. 4Who are you who judge another’s servant? To his own lord he stands or falls. Yes, he will be made to stand, for God has power to make him stand.
5One man esteems one day as more important. Another esteems every day alike. Let each man be fully assured in his own mind. 6He who observes the day, observes it to the Lord; and he who does not observe the day, to the Lord he does not observe it. He who eats, eats to the Lord, for he gives God thanks. He who doesn’t eat, to the Lord he doesn’t eat, and gives God thanks. 7For none of us lives to himself, and none dies to himself. 8For if we live, we live to the Lord. Or if we die, we die to the Lord. If therefore we live or die, we are the Lord’s. 9For to this end Christ died, rose, and lived again, that he might be Lord of both the dead and the living.
10But you, why do you judge your brother? Or you again, why do you despise your brother? For we will all stand before the judgment seat of Christ. 11For it is written,
“‘As I live,’ says the Lord, ‘to me every knee will bow.
Every tongue will confess to God.’”
12So then each one of us will give account of himself to God.
13Therefore let’s not judge one another any more, but judge this rather, that no man put a stumbling block in his brother’s way, or an occasion for falling. 14I know and am persuaded in the Lord Jesus that nothing is unclean of itself; except that to him who considers anything to be unclean, to him it is unclean. 15Yet if because of food your brother is grieved, you walk no longer in love. Don’t destroy with your food him for whom Christ died. 16Then don’t let your good be slandered, 17for God’s Kingdom is not eating and drinking, but righteousness, peace, and joy in the Holy Spirit. 18For he who serves Christ in these things is acceptable to God and approved by men. 19So then, let’s follow after things which make for peace, and things by which we may build one another up. 20Don’t overthrow God’s work for food’s sake. All things indeed are clean, however it is evil for that man who creates a stumbling block by eating. 21It is good to not eat meat, drink wine, nor do anything by which your brother stumbles, is offended, or is made weak.
22Do you have faith? Have it to yourself before God. Happy is he who doesn’t judge himself in that which he approves. 23But he who doubts is condemned if he eats, because it isn’t of faith; and whatever is not of faith is sin.
24Now to him who is able to establish you according to my Good News and the preaching of Jesus Christ, according to the revelation of the mystery which has been kept secret through long ages, 25but now is revealed, and by the Scriptures of the prophets, according to the commandment of the eternal God, is made known for obedience of faith to all the nations; 26to the only wise God, through Jesus Christ, to whom be the glory forever! Amen.
The "wine" spoken of in this passage is with little doubt fermented since the word is oinos (οἶνος), a translation of the Hebrew word yayin (יַ֜יִן). The word for "grape juice" (thus not fermented) is trux (τρύξ), a word not found in the New Testament. The limited use of grape juice may relate to the rapid fermentation of grape juice in the climate of Israel. It was common, however, to mix two to three parts water with wine in the first century, a practice that came from Greece with the Hellenizing influence that came from Alexander the Great's entrance into Semitic culture in the middle of the 4th century B.C. This was largely done in order to lessen the cost of wine rather than for sterilizing the water, which is sometimes posited as the reason.
You may read a more extensive study of wine in my article on wine at [H. Wayne House], "Wine," Baker Encyclopedia of the Bible, Vol 2, J-Z, Walter A. Elwell, Gen. Ed. (Grand Rapids, MI: Baker Book House), 2145-2148.