They have prepared a net for my steps; my soul is bowed down: they have digged a pit before me, into the midst whereof they are fallen themselves. Selah. They have prepared a net for my steps - A gin or springe, such as huntsmen put in the places which they know the prey they seek frequents: such, also, as they place in passages in hedges, etc., through which the game creeps.
They have digged a pit - Another method of catching game and wild beasts. They dig a pit, cover it over with weak sticks and turf. The beasts, not suspecting danger where none appears, in attempting to walk over it, fall tbrough, and are taken. Saul digged a pit, laid snares for the life of David; and fell into one of them himself, particularly at the cave of En-gedi; for he entered into the very pit or cave where David and his men were hidden, and his life lay at the generosity of the very man whose life he was seeking! The rabbins tell a curious and instructive tale concerning this: "God sent a spider to weave her web at the mouth of the cave in which David and his men lay hid. When Saul saw the spider's web over the cave's mouth, he very naturally conjectured that it could neither be the haunt of men nor wild beasts; and therefore went in with confidence to repose." The spider here, a vile and contemptible animal, became the instrument in the hand of God of saving David's life and of confounding Saul in his policy and malice. This may be a fable; but it shows by what apparently insignificant means God, the universal ruler, can accomplish the greatest and most beneficent ends. Saul continued to dig pits to entrap David; and at last fell a prey to his own obstinacy. We have a proverb to the same effect: Harm watch, harm catch. The Greeks have one also: Ἡ τε κακη βουλη τῳ βουλευσαντι κακιστη, "An evil advice often becomes most ruinous to the adviser." The Romans have one to the same effect: -
Neque enim lex justior ulla est
Quam necis artificem arte perire sua.
"There is no law more just than that which condemns a man to suffer death by the instrument which he has invented to take away the life of others."