Job 21:5 KJV
Mark me, and be astonished, and lay your hand upon your mouth.
Job 21:5, King James Version
In context
4 As for me, is my complaint to man? and if it were so, why should not my spirit be troubled?
5 Mark me, and be astonished, and lay your hand upon your mouth.
6 Even when I remember I am afraid, and trembling taketh hold on my flesh.