Isaiah 48:17-18

Thus says the Lord, your Redeemer, the Holy One of Israel: I am the Lord your God, Who teaches you to profit, Who leads you in the way that you should go. 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.