Charles H. Spurgeon on Psalms 17:13

"Arise, O Lord." The more furious the attack, the more fervent the Psalmist's prayer. His eye rests singly upon the Almighty, and he feels that God has but to rise from the seat of his patience, and the work will be performed at once. Let the lion spring upon us, if Jehovah steps between we need no better defence. When God meets our foe face to face in battle, the conflict will soon be over. "Disappoint him." Be beforehand with him, outwit and outrun him. Appoint it otherwise than he has appointed, and so disappoint him. "Cast him down." Prostrate him. Make him sink upon his knees. Make him bow as the conquered bows before the conqueror. What a glorious sight will it be to behold Satan prostrate beneath the foot of our glorious Lord! Haste, glorious day! "Deliver my soul from the wicked, which is thy sword." He recognizes the most profane and oppressive as being under the providential rule of the King of kings, and used as a sword in the divine hand. What can a sword do unless it be wielded by a hand? No more could the wicked annoy us, unless the Lord permitted them so to do. Most translators are, however, agreed that this is not the correct reading, but that it should be as Calvin puts it, "Deliver my soul from the ungodly man by thy sword." Thus David contrasts the sword of the Lord with human aids and reliefs, and rests assured that he is safe enough under the patronage of heaven.