1 Corinthians 11:1-16 (ESV)
11:1 Be imitators of me, as I am of Christ.
2 Now I commend you because you remember me in everything and maintain the traditions even as I delivered them to you. 3 But I want you to understand that the head of every man is Christ, the head of a wife  is her husband, and the head of Christ is God. 4 Every man who prays or prophesies with his head covered dishonors his head, 5 but every wife  who prays or prophesies with her head uncovered dishonors her head, since it is the same as if her head were shaven. 6 For if a wife will not cover her head, then she should cut her hair short. But since it is disgraceful for a wife to cut off her hair or shave her head, let her cover her head. 7 For a man ought not to cover his head, since he is the image and glory of God, but woman is the glory of man. 8 For man was not made from woman, but woman from man. 9 Neither was man created for woman, but woman for man. 10 That is why a wife ought to have a symbol of authority on her head, because of the angels. 11 Nevertheless, in the Lord woman is not independent of man nor man of woman; 12 for as woman was made from man, so man is now born of woman. And all things are from God. 13 Judge for yourselves: is it proper for a wife to pray to God with her head uncovered? 14 Does not nature itself teach you that if a man wears long hair it is a disgrace for him, 15 but if a woman has long hair, it is her glory? For her hair is given to her for a covering. 16 If anyone is inclined to be contentious, we have no such practice, nor do the churches of God.