Unity in the Body of Christ

[W]ith all lowliness and gentleness, with longsuffering, bearing with one another in love, endeavoring to keep the unity of the Spirit in the bond of peace. There is one body and one Spirit, just as you were called in one hope of your calling.
—Ephesians 4:2-4 (NKJV)

There is a proclamation and call in holy scripture for unity within the body of Christ, yet so often it is easy to get divided in our fellowship. Granted, there is a need for affirmation of what is profitable for sound doctrine. Christians, however, that affirm the fundamentals of the faith, should esteem the value of unity with their brethren in Christ across denominational lines. Likewise, we should affirm the value of unity across racial lines (Acts 17:26 NKJV). The reason for division, of course, owes to human nature. But we as Christians should be mindful to repudiate a divisive nature, and embrace unity (1 Cor. 11:17-19 NKJV). Yet, some churches split and bicker over some nuanced detail of eschatology or what color the carpet is.