“But if any man seem to be contentious, we have no such custom, neither the churches of God.”
King James Version (KJV)
11:16 We have no such custom here, nor any of the other churches of God - The several churches that were in the apostles' time had different customs in things that were not essential; and that under one and the same apostle, as circumstances, in different places, made it convenient. And in all things merely indifferent the custom of each place was of sufficient weight to determine prudent and peaceable men. Yet even this cannot overrule a scrupulous conscience, which really doubts whether the thing be indifferent or no. But those who are referred to here by the apostle were contentious, not conscientious, persons.
1Co 11:16 But if any man seemeth to be contentious. If, in spite of nature's lessons, a man contentiously opposes, let him know that We have no such custom, neither the churches of God. No such customs exists in the churches. Many suppose that "custom" refers to being contentious. I think, rather, that it refers to covering the head, etc. The lesson of this whole passage is that we must not defy existing social usages in such a way as to bring reproach on the church.