I will make waste mountains and hills, and dry up all their herbs; and I will make the rivers islands, and I will dry up the pools. I wilt make the rivers islands "I will make the rivers dry deserts" - Instead of איים iyim, islands, read ציים tsiim; a very probable conjecture of Houbigant.
Related Commentaries of Isaiah 42:15
Isaiah 42:15
15 I will make waste mountains and hills, and dry up all their herbs; and I will make the rivers islands, and I will dry up the pools.