15. point—"the whirling glance of the sword" [Fairbairn]. "The naked (bared) sword" [Henderson].
ruins—literally, "stumbling-blocks." Their own houses and walls shall be stumbling-blocks in their way, whether they wish to fight or flee.
made bright—made to glitter.
wrapped, &c.—namely, in the hand of him who holds the hilt, or in its scabbard, that the edge may not be blunt when it is presently drawn forth to strike. Gesenius, translates, "sharpened," &c.