Albert Barnes Commentary Job 13:21

"Withdraw thy hand far from me; And let not thy terror make me afraid." — Job 13:21 (ASV)

Withdraw your hand far from me - (See notes on Job 9:34). The hand of God here is used to denote the calamity or affliction which Job was suffering. The meaning is, “Remove my affliction; restore me to health, and I will then enter on the argument in vindication of my cause. I am now oppressed, and broken down, and enfeebled by disease, and I cannot present it with the vigor which I might evince if I were in health.”

And let not your dread make me afraid - "Do not so overpower me by your severe majesty, that I cannot present my cause in a calm and composed manner.” (See the notes on Job 9:34). Job felt that God had power to overawe him, and he asked, therefore, that he might have a calm and composed mind, and then he would be able to do justice to his own cause.