'Knife' in the Bible

Abraham took the wood of the burnt offering and laid it on Isaac his son. He took in his hand the fire and the knife. They both went together.

Abraham stretched forth his hand, and took the knife to kill his son.

When he was come into his house, he took a knife, and laid hold on his concubine, and divided her, limb by limb, into twelve pieces, and sent her throughout all the borders of Israel.

put a knife to your throat, if you are a man given to appetite.