Does the Bible Teach the Unity of All Believers?
Yes:
“Holy Father, keep through thine own name those whom thou hast given me, that they may be one, as we are. While I was with them in the world, I kept them in thy name.” (John 17:11-12)
“Neither pray I for these alone, but for them also which shall believe on me through their word; That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me. And the glory which thou gavest me I have given them; that they may be one, even as we are one: I in them, and thou in me, that they may be made perfect in one; and that the world may know that thou hast sent me, and hast loved them, as thou hast loved me.” (John 17:20-23)
“Now I beseech you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no divisions among you; but that ye be perfectly joined together in the same mind and in the same judgment.” (1 Corinthians 1:10)
“Ye are all one in Christ Jesus.” (Galatians 3:28)
“Only let your conversation be as it becometh the gospel of Christ: that whether I come and see you, or else be absent, I may hear of your affairs, that ye stand fast in one spirit, with one mind striving together for the faith of the gospel.” (Philippians 1:27)
“Fulfil ye my joy, that ye be likeminded, having the same love, being of one accord, of one mind.” (Philippians 2:2)
“Now the God of patience and consolation grant you to be likeminded one toward another according to Christ Jesus: That ye may with one mind and one mouth glorify God, even the Father of our Lord Jesus Christ.” (Romans 15:5-6)
“And the multitude of them that believed were of one heart and of one soul.” (Acts 4:32)
Can anybody look upon this bright picture and not see an awful contrast between it and the dark picture of the present-day sect confusion? Do the members of the different sects have the same care one for another? Behold, they are not of one mind, nor of one judgment; they are not one in name, nor creed, nor body; they are not of one heart, nor of one soul, nor of one spirit, nor yet of one faith; they have not one mouth, nor do they speak the same things. They are never one, except it be in opposing Bible salvation. As God confounded the babel-builders, and they all became divided and of different tongues, so He has sent His thunderbolts of wrath upon Rome, “the mother of harlots,” (Revelation 17:5) and has knocked off several hundred Protestant fragments, each one of which speaks the peculiar dialect of its creed.
The church, compared with a human body, is required to have but one mouth, which means perfect harmony in all her teaching. If we were to agree that the multiplicity of sects are the church, then a human monstrosity, having several hundred mouths, and every mouth speaking contrary to every other mouth, would be necessary to symbolize it. As the body of Christ has but one mouth and speaks the same things, it is very evident that the jargon confusion of sect tongues does not represent His body, and is not His church.