Job 40:4 in the King James Version
Behold, I am vile; what shall I answer thee? I will lay mine hand upon my mouth.
Context
3 Then Job answered the LORD,
4 “Behold, I am of small account. What will I answer you? I lay my hand on my mouth.
5 I have spoken once, and I will not answer; Yes, twice, but I will proceed no further.”