John Trapp on Isaiah 48:18

Ver. 18. Oh that thou hadſt hearkened to my Commandements] See the like wiſhes, Deut. 32.29. and 5.29. Pſal. 81.13. implying, that ſo they might have redeemed many ſorrows, eſcaped many miſeries.

Then had thy peace been as a river] Great peace have all they that love Gods Law, and nothing ſhall offend them, Pſal. 119 105. they ſhall have a confluence of all comforts and contentments: yet ever with an exception of the croſs, as need requireth.

And thy righteouſneſſe as the waves of the ſea] Which are perpetual, fluctus fluctum trudit.