1 Corinthians 11:5

But every woman praying or prophesying with her head unveiled dishonoreth her head [Corinth was made up of Greeks, Romans and Jews, and all these three elements of her population were found in the church to which Paul wrote. The Jew and the Roman worshipped with covered, and the Greek with uncovered, head. Naturally a dispute would arise as to which custom was right. Moreover, as the women were beyond all doubt acquainted with the principle that there is neither male nor female in the spiritual realm (Gal 3:28), they seem to have added to the confusion by taking sides in the controversy, so that some of them asserted the right to worship with uncovered heads after the fashion of the Greeks. Now, in the East in Paul's day, all women went into public assemblies with their heads veiled, and this peplum, or veil, was regarded as a badge of subordination, a sign that the woman was under the power of the man. Thus Chardin, the traveler, says that the women of Persia wear a veil in sign that they are "under subjection," a fact which Paul also asserts in this chapter. Now, the symbolic significance of a woman's head-dress became the determining factor in this dispute. For a man to worship with a covered head was an act of effeminacy, a disgrace to his head, and for a woman to worship with uncovered head was likewise disgraceful, for it would at once be looked upon as a bold assertion of unwarranted independence, a sign that she had laid aside her modesty and removed from her sphere. From this passage it is plain that it was not intended that Christianity should needlessly vary from the national customs of the day. For Christians to introduce needless innovations would be to add to the misconceptions which already subjected them to persecution. One who follows Christ will find himself conspicuously different from the world, without practicing any tricks of singularity]; or it is one and the same thing as if she were shaven.