O thou sword of the LORD, how long will it be ere thou be quiet? put up thyself into thy scabbard, rest, and O thou sword of the LORD, how long will it be ere thou be quiet? put up thyself into thy scabbard, rest, and be still.
O thou sword of the Lord, how long will it be ere thou be quiet? Jeremiah, in the person of the Philistines afflicting themselves (Jeremiah 47:5), apostrophizes the sword of the Lord, entreating mercy (cf. Deuteronomy 32:41; Ezekiel 21:3-5; Ezekiel 21:9-10).
Put up thyself - Hebrew, 'Gather thyself' - i:e., Retire or Return.