The one true church is the universal body of believers everywhere who have given their hearts to Jesus Christ as Savior and Lord. That is the only true church (see Ephesians 1:22-23, Colossians 1:18).
The Bible teaches us that we must maintain the unity of the Spirit (see Ephesians 4:3) until we come into unity of faith (see Ephesians 4:13). In other words, spiritual unity is something that all Christians can have. Complete unity of knowledge is something for the future.
The fact that there are many different denominations reflects a lack of knowledge in the church. In many instances, it also reflects pride. People are unwilling to meet together with others and submit their concepts to the body of Christ. And many denominations have come about because of doctrinal error. What begins as a beautiful and fresh revelation of God often degenerates into lukewarmness and then into fighting what God is doing.
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