Episode 686: TE: Hair, Beards, and Markings in Ancient Mourning Practices (Leviticus 19:27-28)

What does the bible say about cutting your hair, marring your beards, and other markings in association with ancient mourning practices? Does Leviticus 19:27-28 really mean you cannot get a haircut, shave your beard, or get a tattoo at all? Is doing a sin?