'Knives' in the Bible

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

And Joshua made him knives of lint, 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 lances, till the blood gushed out upon them.

And this is the number of them: thirty platters of gold, a thousand platters 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.