flee... horses... shall ye flee. Note the Figure of speech Paronomasia. Hebrew. nanus... sus... t'nusun, for emphasis.
swift... shall they... be swift. Figure of speech Paronomasia. Hebrew. kal... yikkallu, for emphasis; not. mere "play on words".
Related Commentaries of Isaiah 30:16
Isaiah 30:16
16 But ye said, No; for we will flee upon horses; therefore shall ye flee: and, We will ride upon the swift; therefore shall they that pursue you be swift.