'Dumb' in the Bible
Let lying lips be dumb, that speak against [the] righteous unrestrained with arrogance and contempt.
Then [the] lame shall leap like the deer, and [the] tongue of [the] dumb shall sing for joy, for waters shall break forth in the wilderness and streams in the desert.
He was oppressed and afflicted, yet he did not open his mouth; he was brought like lamb to [the] slaughter, and like a sheep is dumb before its shearers, so he did not open his mouth.
His watchmen [are] blind, none of them know. They [are] all dumb dogs; they are unable to bark, panting, lying down, loving to slumber.
And the hand of Yahweh was on me on the evening {before} the coming of the survivor, and he opened my mouth {before the survivor came to me in the morning}, and my mouth was opened, and I was {no longer} dumb.