It seems that it has again become fashionable for women in the US to have long hair. Scripture presents Christian women with clear revelation for why they should have long hair regardless of what the current fashion trends may be.
In figurative language, God commends a woman’s having long hair when He includes a statement about Jerusalem’s hair having grown as part of her natural beauty that He had bestowed upon her as a grown woman:
Eze 16:7 I have caused thee to multiply as the bud of the field, and thou hast increased and waxen great, and thou art come to excellent ornaments: thy breasts are fashioned, and thine hair is grown, whereas thou wast naked and bare.
The Apostle Paul challenges the Corinthian believers about proper practice in public worship partly by reasoning with them from the instruction that they innately receive concerning what is excellent for a woman:
1Co 11:13 Judge in yourselves: is it comely that a woman pray unto God uncovered?
14 Doth not even nature itself teach you, that, if a man have long hair, it is a shame unto him?
15 But if a woman have long hair, it is a glory to her: for her hair is given her for a covering.
From divine viewpoint, long hair is a uniquely excellent1 attribute that God has given to women. It is not incidental that God here extols one of the same things to which He directed attention to about Jerusalem when she had grown up.
Although fashions frequently change in human cultures, God’s truth remains unchanged. Christian women should have long hair because their having long hair is a unique excellence that God has bestowed upon them and commended to them in His perfect Word.
1 This terminology is based on the excellent explanation provided in preaching and teaching by Pastor Mark Minnick that the glory of something may best be understood as its unique excellence.