Isaiah 48:18

18 Oh that you had listened to my mitzvot! then had your shalom been as a river, and your righteousness as the waves of the sea:

Isaiah 48:18 Meaning and Commentary

Isaiah 48:18

O that thou hadst hearkened to my commandments
Which the Jews did not, but slighted and despised them, and were not obedient to them. So, in the times of Christ, they disregarded his doctrines, though so profitable; and despised his ordinances and commands, which were not grievous; they neither hearkened to them themselves, nor would suffer others; wherefore our Lord expresses his great concern at it, and his desire, as man, after their welfare; see ( Matthew 23:13 Matthew 23:37 ) : then had thy peace been as a river:
their prosperity, temporal and spiritual, had been abundant, and would have always continued, have been increasing and ever flowing, yea, overflowing, like the waters of a river. The Targum is, the river Euphrates, a river which ran through Babylon: but they had no regard to the things which related to their temporal, spiritual, and eternal peace, these were hid from their eyes, ( Luke 19:42 ) : and thy righteousness as the waves of the sea:
large, abundant, numerous as the waves of the sea; which may regard acts of justice and righteousness, which are the support of a people and state, and blessings the fruit thereof; and which God of his goodness bestows on such a people, as all kind of prosperity, protection, safety, and continuance.

Isaiah 48:18 In-Context

16 Come you near to me, hear you this; from the beginning I have not spoken in secret; from the time that it was, there am I: and now the Lord GOD has sent me, and his Spirit.
17 Thus says the LORD, your Redeemer, the Holy One of Yisra'el: I am the LORD your God, who teaches you to profit, who leads you by the way that you should go.
18 Oh that you had listened to my mitzvot! then had your shalom been as a river, and your righteousness as the waves of the sea:
19 your seed also had been as the sand, and the offspring of your loins like the grains of it: his name would not be cut off nor destroyed from before me.
20 Go you forth from Bavel, flee you from the Kasdim; with a voice of singing declare you, tell this, utter it even to the end of the eretz: say you, the LORD has redeemed his servant Ya`akov.
The Hebrew Names Version is in the public domain.