'Sharp' in the Bible

whose arrows are sharp, and all their bows bent. Their horses' hoofs will be like flint, and their wheels like a whirlwind.

For the dill are not threshed with a sharp instrument, neither is a cart wheel turned over the cumin; but the dill is beaten out with a stick, and the cumin with a rod.

Behold, I have made you into a new sharp threshing instrument with teeth. You will thresh the mountains, and beat them small, and will make the hills like chaff.

and he has made my mouth like a sharp sword; in the shadow of his hand, he has hidden me: and he has made me a polished shaft; in his quiver has he kept me close: