אִסְר֣וּ הַסּוּסִ֗ים וַֽעֲלוּ֙ הַפָּ֣רָשִׁ֔ים וְהִֽתְיַצְּב֖וּ בְּכ֥וֹבָעִ֑ים מִרְקוּ֙ הָֽרְמָחִ֔ים לִבְשׁ֖וּ הַסִּרְיֹנֹֽת׃
Harness the horses, and mount, ye horsemen, And stand forth with your helmets; Furbish the spears, put on the coats of mail.
Rashi on Jeremiah
polish the spears Heb. מרקו. Cf. “It shall be scoured (וּמֹרַק) and rinsed” (Lev. 6:21), (forbir in O.F., to furbish).