Never are we told to make unity, but to “keep the unity of the Spirit” (Ephesians:4:3) which we already have in Christ. Our lives and the doctrine upon which our lives are founded are to express God’s Word and His truth. Any deviation therefrom denies the unity which is ours in Christ. Those who are not members of Christ’s body through having believed the gospel are not part of this family, and there is no “unity” believers can fabricate to make them so.
Dave Hunt, The Berean Call, April 1998