Psalm 38:13

"But I, as a deaf man, heard not; and I was as a dumb man that openeth not his mouth."

Cross References (ranked by relevance)

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.

Psalm 39:9

I was dumb, I opened not my mouth; because thou didst it.

Psalm 39:2

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

1 Peter 2:23

Who, when he was reviled, reviled not again; when he suffered, he threatened not; but committed himself to him that judgeth righteously: