'Silence' in the Bible

The elders of the daughter of Zion sit upon the ground, they keep silence; they have cast dust upon their heads, they have girded themselves with sackcloth: the virgins of Jerusalem hang down their head to the ground.

It is good that one should both wait, and that in silence, for the salvation of Jehovah.

He sitteth solitary and keepeth silence, because he hath laid it upon him;