Denomination, Does It Mean Anything?

In Ephesians 4:4-6 we are told that: There is one body, and one Spirit, even as ye are called in one hope of your calling; One Lord, one faith, one baptism, One God and Father of all, who is above all, and through all, and in you all.

Despite this fact, there are those who will tell you that they are either Baptist, Methodist, Catholic, Pentecostal, Lutheran, Adventist, or some other religious order, as though there are various types of bodies, (congregations) and faiths, (denominations) in Christ.

Seeing that these beliefs run contrary to the scriptures, are we or are we not obligated in Christ to refrain such denominational observances? Does denomination mean anything to God?