'Knives' in the Bible

At that time, Yahweh said to Joshua, "Make flint knives, and circumcise again the children of Israel the second time."

Joshua made himself flint knives, and circumcised the children of Israel at the hill of the foreskins.

They cried aloud, and cut themselves in their way with knives and lances, until the blood gushed out on them.

This is the number of them: thirty platters of gold, one thousand platters of silver, twenty-nine knives,

There is a generation whose teeth are like swords, and their jaws like knives, to devour the poor from the earth, and the needy from among men.