If there are any doubts that peacemaking and unity are important to God, consider the fact he talks about them so often. Here is just a sample, one passage from almost every book of the New Testament (the omissions are from 2 Peter onward):
• “Blessed are the peacemakers, for they will be called sons of God" (Matthew 5:9).
• “Salt is good, but if it loses its saltiness, how can you make it salty again? Have salt in yourselves, and be at peace with each other” (Mark 9:50).
• “As you are going with your adversary to the magistrate, try hard to be reconciled to him on the way, or he may drag you off to the judge, and the judge turn you over to the officer, and the officer throw you into prison" (Luke 12:58).
• “I in them and you in me. May they be brought to complete unity to let the world know that you sent me and have loved them even as you have loved me" (John 17:23).
• “All the believers were one in heart and mind. No one claimed that any of his possessions was his own, but they shared everything they had" (Acts 4:32).
• “If it is possible, as far as it depends on you, live at peace with everyone” (Romans 12:18).
• “I appeal to you, brothers, in the name of our Lord Jesus Christ, that all of you agree with one another so that there may be no divisions among you and that you may be perfectly united in mind and thought” (1 Corinthians 1:10).
• “Finally, brothers, good-by. Aim for perfection, listen to my appeal, be of one mind, live in peace. And the God of love and peace will be with you” (2 Corinthians 13:11).
• “The entire law is summed up in a single command: ‘Love your neighbor as yourself.’ If you keep on biting and devouring each other, watch out or you will be destroyed by each other” (Galatians 5:14-15).
• “Be completely humble and gentle; be patient, bearing with one another in love. Make every effort to keep the unity of the Spirit through the bond of peace” (Ephesians 4:2-3).
• “Make my joy complete by being like-minded, having the same love, being one in spirit and purpose. Do nothing out of selfish ambition or vain conceit, but in humility consider others better than yourselves. Each of you should look not only to your own interests, but also to the interests of others” (Philippians 2:2-4).
• “Bear with each other and forgive whatever grievances you may have against one another. Forgive as the Lord forgave you. And over all these virtues put on love, which binds them all together in perfect unity” (Colossians 3:13-14).
• “Live in peace with each other” (1 Thessalonians 5:13b).
• “Now may the Lord of peace himself give you peace at all times and in every way. The Lord be with all of you" (2 Thessalonians 3:16).
• “I want men everywhere to lift up holy hands in prayer, without anger or disputing" (1 Timothy 2:8).
• “Flee the evil desires of youth, and pursue righteousness, faith, love and peace, along with those who call on the Lord out of a pure heart” (2 Timothy 2:22).
• “Remind the people to be subject to rulers and authorities, to be obedient, to be ready to do whatever is good, to slander no one, to be peaceable and considerate, and to show true humility toward all men” (Titus 3:1-2).
• “So if you consider me a partner, welcome him as you would welcome me.
If he has done you any wrong or owes you anything, charge it to me" (Philemon 17-18).
• “Make every effort to live in peace with all men and to be holy; without holiness no one will see the Lord” (Hebrews 12:14).
• “Who is wise and understanding among you? Let him show it by his good life, by deeds done in the humility that comes from wisdom.... But the wisdom that comes from heaven is first of all pure; then peace-loving, considerate, submissive, full of mercy and good fruit, impartial and sincere. Peacemakers who sow in peace raise a harvest of righteousness” (James 3:13, 17-18).
• “Finally, all of you, live in harmony with one another; be sympathetic, love as brothers, be compassionate and humble” (1 Peter 3:8).