1 Corinthians 11:16 (ESV)

16 If anyone is inclined to be contentious, we have no such practice, nor do the churches of God.

Paul foresees that some of the Corinthians will still disagree with his stance on this matter. He describes these people as those who are inclined to be contentious; in other words, people who love to argue simply for the sake of arguing. Not wanting to wear head coverings (or to have the women in the church wear them), they will probably appeal to the well-known slogan, All things are lawful (1 Corinthians 6:12; 1 Corinthians 10:23).

Paul stops these people in their tracks. He points out that all the apostles (we) are in agreement on this issue. Those who contend with him will be standing against the apostles, the other churches, and ultimately against God (since these churches are the churches of God).