King James Version (KJV)
O that thou hadst hearkened to my commandments! then had thy peace been as a river, and thy righteousness as the waves of the sea:
Modern English
Oh that you had listened to my commandments! Then your peace would have been like a river, and your righteousness like the waves of the sea.
Hebrew
ל֥וּא הִקְשַׁ֖בְתָּ לְמִצְוֺתָ֑י וַיְהִ֤י כַנָּהָר֙ שְׁלוֹמֶ֔ךָ וְצִדְקָתְךָ֖ כְּגַלֵּ֥י הַיָּֽם׃
lvʾ hiqshabta lmiṣvotay vayhiy kanahar shlvomeka vṣidqatka kgaley hayam