If he turn not. — The Hebrew is doubly idiomatic. Translate surely (see Hebrews 3:11, with Note in New Testament Commentary), He will again whet His sword. It is true that the verb to turn in the sense of repetition usually precedes the other verb immediately, without, as here, any other words intervening.
Bent. — Literally, trodden, showing that the foot was used by the Israelites to bend the bow, as by archers now. (Smith’s Bible Dictionary, “Arms.”)