Isaiah 48:18-20 Amplified Bible, Classic Edition (AMPC)

¹⁸ Oh, that you had hearkened to My commandments! Then your peace and prosperity would have been like a flowing river, and your righteousness [the holiness and purity of the nation] like the [abundant] waves of the sea.

¹⁹ Your offspring would have been like the sand, and your descendants like the offspring of the sea; their name would not be cut off or destroyed from before Me.

²⁰ Go forth out of Babylon, flee from the Chaldeans! With a voice of singing declare, tell this, cause it to go forth even to the end of the earth; say, The Lord has redeemed His servant Jacob!