John Trapp on Isaiah 19:6

Ver. 6. And they ſhall turn the Rivers far away] The Aſſyrians ſhall: or ſome of their own fond and vain glorious Princes ſhall drain the River Nilus at ſeveral paſſages and in ſeveral places, to the impairing of the River,Herodot. l. 2. and the impeaching of the State.

The reeds and flags ſhall wither] Theſe were of great uſe there: for of flags they made their barks and boats,Plin. lib. 13. cap. 11. matts alſo, wheels, baskets, &c. of reeds they made their Sails, ropes, paper, and a kind of juyce ſerving them for food, &c. As therefore the Palm-tree is to the Indians a Cornu-copia, yielding ſundry commodities, ſo are Reeds and Flags to the Egyptians.