'Knives' in the Bible

At that time the LORD said unto Joshua, Make thee sharp knives, and circumcise again the children of Israel the second time.

And Joshua made him sharp knives, and circumcised the children of Israel at the hill of the foreskins.

And they cried aloud, and cut themselves after their manner with knives and lancets, till the blood gushed out upon them.

And this is the number of them: thirty chargers of gold, a thousand chargers of silver, nine and twenty knives,

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