I am a meat-eater. I have tried a variety of meats, including rattlesnake. I regularly told my children that bacon and sausage are a Christian privilege, arising out of our freedom from Jewish dietary laws forbidding consumption of pork.
Yet many years ago Beth and I found ourselves scrupulously reading labels and trying to prepare a meal that contained absolutely no animal products of any kind, forgoing even milk and eggs. We were hosting guests who were seekers whom we hoped to show the love of Christ as we welcomed them to our home for dinner. What we generally felt perfectly free to eat was for that evening not allowed on our table.
Something like that vegan meal was what Paul had in mind as he continued in Romans 14:13-23 his discussion with the Romans concerning the eating of what was likely meat first offered to idols then sold in the public market. Abstention from wine may have been a spiritual discipline among some of the Roman Christians. What he wants to show now is that the scruples of others, even if not strictly required of us, may become binding on us by the implications of having come into the people of God through Christ.
The center and heart of the passage is verse 17, “For the kingdom of God is not food and drink but righteousness and peace and joy in the Holy Spirit.” Here in the midst of a totally practical problem of how to relate to Christians with different dietary rules, Paul goes back to what he said at the beginning of Romans 5 about God’s gift of justification or righteousness leading to peace and to joy through His love poured out into hearts through the Holy Spirit.
In other words, what Paul has to say about getting along in spite of differences in the Church is firmly grounded in what he has already said about faith and justification in and through Christ. Christian moral direction is based in Christian doctrine about how it is that we are justified in Christ through faith.
As chapter 15 verse 1 clearly shows, Paul writes from the point of view of those who are “strong” in faith and realize that “everything is indeed clean” as he says in verse 20. In such strong faith, we are free to eat or drink whatever we like (without overindulging and committing the sins of drunkeness or gluttony). But for the sake of others in the Kingdom our diets may be restricted in various ways.
So the diet of the Kingdom of God is to eat or drink whatever you like, only so long as doing so does not trouble your own conscience (verses 22-23) or the conscience of a sister or brother in Christ. We might all be healthier if we followed this diet recommendation.