שִׁנַּ֙יִךְ֙ כְּעֵ֣דֶר הָֽרְחֵלִ֔ים שֶׁעָל֖וּ מִן־הָרַחְצָ֑ה שֶׁכֻּלָּם֙ מַתְאִימ֔וֹת וְשַׁכֻּלָ֖ה אֵ֥ין בָּהֶֽם׃
Thy teeth are like a flock of ewes, Which are come up from the washing; Whereof all are paired, And none faileth among them.
Rashi on Song of Songs
Your teeth. The officers and the mighty that are among you are entirely good.
Rashi on Song of Songs
Like a counted flock. The ewe can entirely be utilized for holy purposes: its wool is for blue thread, its flesh for sacrifice, its horns for shofars, its thighs for flutes, its intestines for harp [strings], its hide for a drum. But the wicked [i.e., nations] were likened to dogs, for they are entirely unuseable for holy purposes.