What Does the Bible Say About Unity?

"Jesus said these things, then lifting up his eyes to heaven, he said, “Father, the time has come. Glorify your Son, that your Son may also glorify you; even as you gave him authority over all flesh, so he will give eternal life to all whom you have given him. This is eternal life, that they should know you, the only true God, and him whom you sent, Jesus Christ. I glorified you on the earth. I have accomplished the work which you have given me to do. Now, Father, glorify me with your own self with the glory which I had with you before the world existed. “I revealed your name to the people whom you have given me out of the world. They were yours, and you have given them to me. They have kept your word. Now they have known that all things whatever you have given me are from you, for the words which you have given me I have given to them; and they received them, and knew for sure that I came from you. They have believed that you sent me. I pray for them. I don’t pray for the world, but for those whom you have given me, for they are yours. All things that are mine are yours, and yours are mine, and I am glorified in them. I am no more in the world, but these are in the world, and I am coming to you. Holy Father, keep them through your name which you have given me, that they may be one, even as we are."

This passage is the starting point because it gives the reading its main biblical weight: Jesus' prayer, Paul's body imagery, and apostolic exhortations connect unity to truth, love, and shared mission.

"I therefore, the prisoner in the Lord, beg you to walk worthily of the calling with which you were called, with all lowliness and humility, with patience, bearing with one another in love, being eager to keep the unity of the Spirit in the bond of peace. There is one body and one Spirit, even as you also were called in one hope of your calling, one Lord, one faith, one baptism, one God and Father of all, who is over all and through all and in us all. But to each one of us, the grace was given according to the measure of the gift of Christ. Therefore he says, “When he ascended on high, he led captivity captive, and gave gifts to people.” Now this, “He ascended”, what is it but that he also first descended into the lower parts of the earth? He who descended is the one who also ascended far above all the heavens, that he might fill all things. He gave some to be apostles; and some, prophets; and some, evangelists; and some, shepherds and teachers; for the perfecting of the saints, to the work of serving, to the building up of the body of Christ, until we all attain to the unity of the faith and of the knowledge of the Son of God, to a full grown man, to the measure of the stature of the fullness of Christ, that we may no longer be children, tossed back and forth and carried about with every wind of doctrine, by the trickery of men, in craftiness, after the wiles of error;"

The apostolic letters press unity into the life of the church, where doctrine becomes worship, speech, habits, and love.

"Now concerning spiritual things, brothers, I don’t want you to be ignorant. You know that when you were heathen, you were led away to those mute idols, however you might be led. Therefore I make known to you that no man speaking by God’s Spirit says, “Jesus is accursed.” No one can say, “Jesus is Lord,” but by the Holy Spirit. Now there are various kinds of gifts, but the same Spirit. There are various kinds of service, and the same Lord. There are various kinds of workings, but the same God who works all things in all. But to each one is given the manifestation of the Spirit for the profit of all. For to one is given through the Spirit the word of wisdom, and to another the word of knowledge according to the same Spirit, to another faith by the same Spirit, and to another gifts of healings by the same Spirit, and to another workings of miracles, and to another prophecy, and to another discerning of spirits, to another different kinds of languages, and to another the interpretation of languages. But the one and the same Spirit produces all of these, distributing to each one separately as he desires. For as the body is one and has many members, and all the members of the body, being many, are one body; so also is Christ. For in one Spirit we were all baptized into one body, whether Jews or Greeks, whether bond or free; and were all given to drink into one Spirit."

The apostolic letters press unity into the life of the church, where doctrine becomes worship, speech, habits, and love.

"Now we who are strong ought to bear the weaknesses of the weak, and not to please ourselves. Let each one of us please his neighbor for that which is good, to be building him up. For even Christ didn’t please himself. But, as it is written, “The reproaches of those who reproached you fell on me.” For whatever things were written before were written for our learning, that through perseverance and through encouragement of the Scriptures we might have hope. Now the God of perseverance and of encouragement grant you to be of the same mind with one another according to Christ Jesus, that with one accord you may with one mouth glorify the God and Father of our Lord Jesus Christ. Therefore accept one another, even as Christ also accepted you, to the glory of God. Now I say that Christ has been made a servant of the circumcision for the truth of God, that he might confirm the promises given to the fathers, and that the Gentiles might glorify God for his mercy. As it is written, “Therefore I will give praise to you among the Gentiles and sing to your name.” Again he says, “Rejoice, you Gentiles, with his people.” Again, “Praise the Lord, all you Gentiles! Let all the peoples praise him.” Again, Isaiah says, “There will be the root of Jesse, he who arises to rule over the Gentiles; in him the Gentiles will hope.”"

The apostolic letters press unity into the life of the church, where doctrine becomes worship, speech, habits, and love.

"A Song of Ascents. By David. See how good and how pleasant it is for brothers to live together in unity! It is like the precious oil on the head, that ran down on the beard, even Aaron’s beard, that came down on the edge of his robes, like the dew of Hermon, that comes down on the hills of Zion; for there the LORD gives the blessing, even life forever more."

The Psalms give unity a prayer language, helping readers speak honestly to God instead of turning the topic into abstraction.