Leviticus 19:27 ►
New International Version
"'Do not cut the hair at the sides of your head or clip off the edges of your beard."
For a couple of decades I understood Lev. 19:27 to mean not to cut off your sideburns, which of necessity in this lexicon resulted in such a person who disobeyed sporting a goatee - somewhat devilish.
But on closer inspection it may be that the writer was instructing a healthy observance of leaving a bit of stubble whenever shaving so as not to cause the inevitable bleed and resulting mess which a close shave - ie to the edges or ends of one's beard - usually yields.
It is rather unhygienic to leave nicks and bleeds in the face. Facial hair may protect men from night predators especially insects which like to enter the mouths of sleeping humans.
It is rumored that spiders are so ubiquitous on planet earth that you are never more than three feet from one at any time. Also the reported number of spiders ingested by humans is eight per year. These must of needs go in during sleep. One hopes beards stop this attack.