Adam Clarke on Psalms 39:10

Remove thy stroke away from me - This seems to be a figure taken from gladiators, or persons contending in single combat. One is wounded so as to be able to maintain the fight no longer: he therefore gives in, and prays his adversary to spare his life. I am conquered; I can hold the contest no longer: thou art too powerful for me. He cries what our ancestors used to term craven; the word spoken by him who was conquered in the battle ordeal, or trial by combat.