וַיִּתֵּ֥ן אֹתָ֛הּ לְמָרְטָ֖ה לִתְפֹּ֣שׂ בַּכָּ֑ף הִֽיא־הוּחַ֤דָּה חֶ֙רֶב֙ וְהִ֣יא מֹרָ֔טָּה לָתֵ֥ת אוֹתָ֖הּ בְּיַד־הוֹרֵֽג׃
And it is given to be furbished, That it may be handled; The sword, it is sharpened, Yea, it is furbished, To give it into the hand of the slayer.
Read midrashic interpretation of Ezekiel 21:16: and classical rabbinic exegesis.