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:
Then had thy peace been as a river - (Psalms 119:165.) Compare the desire expressed by the same Messiah, Matthew 23:37; Luke 19:42.
River (Isaiah 33:21; Isaiah 41:18) - A river flowing from God's throne is the symbol of free, abundant, and everflowing blessings from Him (Ezekiel 47:1; Zechariah 14:8; Revelation 22:1).
Righteousness - thy religious prosperity, the parent of "peace" or national prosperity; therefore "peace" corresponds to "righteousness" in the parallelism (Isaiah 32:17).