'Knife' in the Bible

Then Abraham took the wood for the burnt offering and laid it on [the shoulders of] Isaac his son, and he took the fire (firepot) in his own hand and the [sacrificial] knife; and the two of them walked on together.

Abraham reached out his hand and took the knife to kill his son.

Then Zipporah took a flint knife and cut off the foreskin of her son and threw it at Moses’ feet, and said, “Indeed you are a husband of blood to me!”

When he arrived at his house, he took a knife, and taking hold of his [dead] concubine, he cut her [corpse] limb by limb into twelve pieces, and sent her [body parts] throughout all the territory of Israel.

For you will put a knife to your throatIf you are a man of great appetite.