Matthew Poole and continuators on 1 Corinthians 11:14

14 Doth not even nature it self teach you, that if a man have long hair, it is a shame unto him .

He tells them, that they could not judge this as a thing comely; for Nature it self taught them, that it is a shame for a man to wear long hair. By Nature here, some understand the Law of Nature, according to which it would have an intrinsick evil in it, which it is plain, it hath not; for then neither must the Nazarites have used it, (as they did) neither would it be lawful for the sake of mens health or life. Others understand by Nature the Law of Nations, but neither is this true; for in many Nations men wear hair at the utmost length. Others understand common Sense, or the light and judgment of that natural Reason which since the Fall is left in man. But this must be the same in all men, and we know that all men do not judge this shameful. Others therefore by Nature here understand a common Custom, which (as they say) maketh as it were a second Nature, so the term is taken, Rom. 11.24. But it cannot so signifie here; for there neither is, nor ever was such an universal custom in any place, that none in it wore long hair. Others by Nature here understand Natural inclination, but neither can this be the sense; for there is in some men, as well as in women, a natural propension and inclination to wear their hair at excessive lengths. Others here by Nature understand the Difference of the Sex, as they take this word to be used, Rom. 1.26. the distinction of the Sexes teacheth us this, and this seemeth to be the most probable sense of this Text. The Apostle arguing that as the male and female Sex, are artificially distiguished by garments, and it was the Will of God they should be so, so they should also be distinguished by the wearing of their hair; and it was no less shame for a man to wear his hair like a woman, than to wear garments like a woman.