Psalms 31:18; Psalms 39:2; Psalms 39:9

18 Let the lying lips be put to silence; which speak grievous things proudly and contemptuously against the righteous.

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

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