that I've read does it condemn beards or long-hair. In fact in the OT, Nazarites who took vows which made them consecrated were told to grow long hair. Every piece of Christian art that I've seen depicts Christ and the Father as having beards and long-hair, including Church media. Even many of our own Church prophets grew long beards.

Placing things into your body that are not native like piercings is one thing; Hair grows naturally.

I wonder sometime if it just a modern-day tradition kept up simply because of perception (ie clean-shaven means better behaved and more humble?)