Unity Based on the Bible
Since God has vested "all authority" in Christ (Matthew 28:18), and since he serves as God's spokesman today (Hebrews 1:1,2), it is our conviction that only Christ has the authority to say what the church is and what we should teach.
And since only the New testament sets forth Christ's instructions to his disciples, it alone must serve as the basis for all religious teaching and practice. This is fundamental with members of churches of Christ. We believe that teaching the New Testament without modification is the only way to lead men and women to become Christians.
We believe religious division is bad. Jesus prayed for unity (John 17). And later, the apostle Paul begged those who were divided to unite in Christ
(1 Corinthians 1). We believe the only way to achieve unity is by a return to the Bible. Compromise cannot bring unity. And surely no person, nor group of persons, has the right to draw up a set of rules by which everyone must abide. But it is altogether proper to say, "Let's unite by just following the Bible." This is fair. This is safe. This is right.
So churches of Christ plead for religious unity based upon the Bible. We believe that to subscribe to any creed other than the New Testament, to refuse to obey any New Testament command, or to follow any practice not sustained by the New Testament is to add to or take away from the teachings of God. And both additions and subtractions are condemned in the Bible (Galatians 1:6-9; Revelation 22:18, 19).
This is the reason the New Testament is the only rule of faith and practice we have in churches of Christ.