נחום ג:יח פירוש: רש״י

Your leaders slumber Heb. נָמוּ, an expression of slumber

are at rest—They cannot stand up.

are scattered Heb. נָפָשׁוּ, like נָפֹצוּ, as all letters emanating from one source are interchangeable. “Zayin,” “shin,” “sammech,” and “tzaddi” all emanate from the tip of the tongue and the bottom of the teeth.