'Dumb' in the Bible

But I, like a deaf man, do not hear;I am like a mute man who does not open his mouth.

I was mute and silent [before my enemies],I refrained even from good,And my distress grew worse.

“I am mute, I do not open my mouth,Because it is You who has done it.

Do you indeed speak righteousness, O gods (heavenly beings)?Do you judge fairly, O sons of men?