Paul indicated that one of the marks of a true Christian is living in harmony with those around you (Romans 12:16) and said, “If possible, so far as it depends on you, live peaceably with all” (Romans 12:17). Paul expanded on this topic when he talked about the example of Christ. Paul said, “We who are strong have an obligation to bear with the failings of the weak, and not to please ourselves” (Romans 15:1). The Greek word that is translated failings asthenema (as-thenˊ-ay-mah) refers to “a scruple of conscience” (G771), so Paul was talking about a person with a strong conscience being obligated to tolerate the behavior of a person whose conscience is less developed. Paul was talking about this because he had just said, “it is wrong for anyone to make another stumble by what he eats” (Romans 14:20) in reference to eating meat sacrificed to idols (1 Corinthians 8). Paul’s comment about not pleasing ourselves had to do with the Christian liberty that allows believers the freedom of acting according to their own conscience (Romans 8:1-2).  

A stumbling block is an offence that causes a believer to sin or fall away from the truth of God’s word (G4625). Paul explained that not every believer has the same knowledge of God’s word, therefore, a person might not think something is a sin when it really is. Paul said of eating food sacrificed to idols, “For if anyone sees you who have knowledge eating in an idol’s temple, will he not be encouraged, if his conscience is weak, to eat food offered to idols? And so by your knowledge this weak person is destroyed, the brother for whom Christ died. Thus, sinning against your brothers and wounding their conscience when it is weak, you sin against Christ. Therefore, if food makes my brother stumble, I will never eat meat, lest I make my brother stumble” (1 Corinthians 8:10-13). Paul indicated that wounding someone’s conscience is a sin against Christ. That is because a weak conscience when it is activated by the wrong criteria produces shame and has to be retrained according to biblical standards (1 Corinthians 8:1-10).

Paul referred to the principle of edification or the building up of the body of Christ as the reason for not pleasing ourselves when we make a choice to do something that might cause a fellow believer to stumble. Paul said:

Let each of us please his neighbor for his good, to build him up. For Christ did not please himself, but as it is written, “The reproaches of those who reproached you fell on me.” For whatever was written in former days was written for our instruction, that through endurance and through the encouragement of the Scriptures we might have hope. May the God of endurance and encouragement grant you to live in such harmony with one another, in accord with Christ Jesus, that together you may with one voice glorify the God and Father of our Lord Jesus Christ. Therefore welcome one another as Christ has welcomed you, for the glory of God. (Romans 15:2-7)

Paul indicated that living in harmony is a gift from God. In the same way that gifts of the Spirit enable individual Christians to minister to one another (1 Corinthians 12), so living in harmony promotes the collective growth of the church or body of Christ (Ephesians 4:15-16).

The Greek word that is translated harmony in Romans 12:16 and 15:5, phroneo (fron-ehˊ-0) comes from the word phren (frane), which means “to think, have a mind-set, be minded. The activity represented by phroneo involves the will, affections, and conscience” (G5426). Thus, harmony could be thought of as a type of collective conscience or what Paul referred to in 1 Corinthians 2:16 as “the mind of Christ.” Jesus used the Greek word sumphoneo (soom-fo-nehˊ-o), which means “to be harmonious” (G4856) to refer to an agreement between two or more individuals (Matthew 18:19; 20:2). Thinking like someone else is necessary for you to reach an agreement. The Bible was meant to be the impetus for agreement between Christians because it established a set of known facts that were universal. And yet, there is often disagreement about the meaning of the Bible’s content and the reliability of its sources.

The mind of Christ is not so much a set of facts that everyone agrees on as it is a mindset or way of thinking for believers that distinguishes them from others and unifies them in their beliefs. Paul identified this mindset as one of humility in his letter to the Philippians. Philippians 2:1-8 states:

So if there is any encouragement in Christ, any comfort from love, any participation in the Spirit, any affection and sympathy, complete my joy by being of the same mind, having the same love, being in full accord and of one mind. Do nothing from selfish ambition or conceit, but in humility count others more significant than yourselves. Let each of you look not only to his own interests, but also to the interests of others. Have this mind among yourselves, which is yours in Christ Jesus, who, though he was in the form of God, did not count equality with God a thing to be grasped, but emptied himself, by taking the form of a servant, being born in the likeness of men. And being found in human form, he humbled himself by becoming obedient to the point of death, even death on a cross.

Paul said that believers are to count others more significant than themselves and to look not only to their own interests, but also to the interests of others (Philippians 2:3-4). Paul indicated that the way Jesus obtained this mindset was by humbling himself and becoming obedient to his Father’s will (Philippians 2:8).

Living in harmony is easy when everyone does their part, but Paul’s final instructions indicated that was not the case in Rome. Paul said, “I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve” (Romans 16:17-18). Paul’s sharp criticism of those in the Roman church who were causing divisions and deceiving unsuspecting Christians was based on his experience with conflict in other churches such as the ones in Corinth (1 Corinthians 6:5-6) and Philippi (Philippians 4:2).

Paul’s final comment suggested that the key to living in harmony is to be clear about what is good and what is evil. Paul said, “I want you to be wise as to what is good and innocent as to what is evil” (Romans 16:19). The Greek word that is translated innocent, akeraios (ak-erˊ-ah-yos) means “unmixed” (G185). What Paul likely meant by being unmixed was that you can’t compromise your values if your goal is to live in harmony. Regarding sexual immorality defiling the Corinthian church, Paul stated, “a little leaven leavens the whole lump” (1 Corinthians 5:1-6). Paul went on to say, “I wrote to you in my letter not to associate with sexually immoral people—not at all meaning the sexually immoral of this world, or the greedy and swindlers, or idolaters, since then you would need to go out of the world. But now I am writing to you not to associate with anyone who bears the name of brother if he is guilty of sexual immorality or greed, or is an idolater, reviler, drunkard, or swindler—not even to eat with such a one. For what have I to do with judging outsiders? Is it not those inside the church whom you are to judge? God judges those outside. “Purge the evil person from among you.”