Isaya 41:15

“Tazama, nitakufanya chombo cha kupuria, kipya na chenye makali, chenye meno mengi. Utaipura milima na kuiponda na kuvifanya vilima kuwa kama makapi.

Behold, I will make thee a new sharp threshing instrument having teeth: thou shalt thresh the mountains, and beat them small, and shalt make the hills as chaff.