'Razor' in the Bible

During the entire time of his dedication, he is not to allow a razor to pass over his head until the days of his holy consecration to the LORD have been fulfilled. He is to let the locks on his head grow long.

because surprise! you're going to conceive and give birth to a son! Don't put a razor to his head, because the young man will be a Nazirite, dedicated to God from inside the womb. He will begin to deliver Israel from domination by the Philistines."

So he finally disclosed everything. He told her, "A razor has never touched my head, because I've been a Nazirite for God before I was born. If I am shaved, then my strength will abandon me and I will become weak like every human being."

Hannah made a vow: "LORD of the Heavenly Armies, if you just look at the misery of your maid servant, remember me, and don't forget your maid servant. If you give your maid servant a son, then I'll give him to the LORD for all the days of his life, and a razor is never to touch his head."

Your tongue, like a sharp razor, devises wicked things and crafts treachery.

"Now as for you, Son of Man, you are to go find a sharp sword and use it like a barber's razor. You are to cut your hair and beard. Then you are to take a weighing scale and divide your shaved hair into three parts.