Verses with the word dumb in the Old Testament (14 verses):

Exodus 4:11
And the LORD said unto him, Who hath made man's mouth? or who maketh the dumb, or deaf, or the seeing, or the blind? have not I the LORD?

Psalms 38:13
But I, as a deaf man, heard not; and I was as a dumb man that openeth not his mouth.

Psalms 39:2
I was dumb with silence, I held my peace, even from good; and my sorrow was stirred.

Psalms 39:9
I was dumb, I opened not my mouth; because thou didst it.

Proverbs 31:8
Open thy mouth for the dumb in the cause of all such as are appointed to destruction.

Isaiah 35:6
Then shall the lame man leap as an hart, and the tongue of the dumb sing: for in the wilderness shall waters break out, and streams in the desert.

Isaiah 53:7
He was oppressed, and he was afflicted, yet he opened not his mouth: he is brought as a lamb to the slaughter, and as a sheep before her shearers is dumb, so he openeth not his mouth.

Isaiah 56:10
His watchmen are blind: they are all ignorant, they are all dumb dogs, they cannot bark; sleeping, lying down, loving to slumber.

Ezekiel 3:26
And I will make thy tongue cleave to the roof of thy mouth, that thou shalt be dumb, and shalt not be to them a reprover: for they are a rebellious house.

Ezekiel 24:27
In that day shall thy mouth be opened to him which is escaped, and thou shalt speak, and be no more dumb: and thou shalt be a sign unto them; and they shall know that I am the LORD.

Ezekiel 33:22
Now the hand of the LORD was upon me in the evening, afore he that was escaped came; and had opened my mouth, until he came to me in the morning; and my mouth was opened, and I was no more dumb.

Daniel 10:15
And when he had spoken such words unto me, I set my face toward the ground, and I became dumb.

Habakkuk 2:18
What profiteth the graven image that the maker thereof hath graven it; the molten image, and a teacher of lies, that the maker of his work trusteth therein, to make dumb idols?

Habakkuk 2:19
Woe unto him that saith to the wood, Awake; to the dumb stone, Arise, it shall teach! Behold, it is laid over with gold and silver, and there is no breath at all in the midst of it.