O that thou hadst heardened to my commandments! - This expresses the earnest wish and desire of God. He would greatly have preferred that they should have kept his law. He had no wish that they should sin, and that these judgments should come upon them. The doctrine taught here is, that God greatly prefers that people should keep his laws. He does not desire that they should be sinners, or that they should be punished. It was so with regard to the Jews; and it is so with regard to all. In all cases, at all times, and with reference to all his creatures, he prefers holiness to sin; he sincerely desires that there should be perfect obedience to his commandments. It is to be remarked also that this is not merely prospective, or a declaration in the abstract. It relates to sin which had been actually committed, and proves that even in regard to that, God would have preferred that it had not been committed. A declaration remarkably similar to this, occurs in Psalm 81:13-16 :

O that my people had hearkened unto me,

And Israel had walked in my ways;

I should soon have subdued their' enemies,

And turned their hand against their adversaries

The haters of the Lord should have submitted themselves unto him:

But their time should have endured forever.

He should have fed them also with the finest of the wheat;

And with honey out of the rock should I have satisfied thee.

Compare Deuteronomy 22:29; Isaiah 5:1-7; Ezekiel 18:23-32; Matthew 23:37; Luke 19:21.

Then had thy peace been as a river - The word 'peace' here (שׁלום shâlôm) means properly wholeness, soundness, and then health, welfare, prosperity, good of every kind. It then denotes peace, as opposed to war, and also concord and friendship. Here it evidently denotes prosperity in general, as opposed to the calamities which actually came upon them.

As a river - That is, abundant - like a full, flowing river that fills the banks, and that conveys fertility and blessedness through a land. 'The pagan, in order to represent the Universal power and beneficence of Jupiter, used the symbol of a river flowing from his throne; and to this the Sycophant in Plautus alludes (Trium. Act iv. Sc. 2, v. 98), in his saying that he had been at the head of that river:

Ad caput amuis, quod de coelo exoritur, sub solio Jovis.

See also Wemyss' Key to the Symbolical Language of Scripture, Art. River. Rivers are often used by the sacred writers, and particularly by Isaiah, as symbolic of plenty and prosperity Isaiah 32:2; Isaiah 33:21; Isaiah 41:18; Isaiah 43:19.

continued...

As a river "Like the river" - That is, the Euphrates.

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,

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.

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:

48:18 As the waves - Infinite and continual.

18. peace-(Ps 119:165). Compare the desire expressed by the same Messiah (Mt 23:37; Lu 19:42).

river-(Isa 33:21; 41:18), a river flowing from God's throne is the symbol of free, abundant, and ever flowing blessings from Him (Eze 47:1; Zec 14:8; Re 22:1).

righteousness-religious prosperity; the parent of "peace" or national prosperity; therefore "peace" corresponds to "righteousness" in the parallelism (Isa 32:17).

48:16-22 The Holy Spirit qualifies for service; and those may speak boldly, whom God and his Spirit send. This is to be applied to Christ. He was sent, and he had the Spirit without measure. Whom God redeems, he teaches; he teaches to profit by affliction, and then makes them partakers of his holiness. Also, by his grace he leads them in the way of duty; and by his providence he leads in the way of deliverance. God did not afflict them willingly. If their sins had not turned them away, their peace should have been always flowing and abundant. Spiritual enjoyments are ever joined with holiness of life and regard to God's will. It will make the misery of the disobedient the more painful, to think how happy they might have been. And here is assurance given of salvation out of captivity. Those whom God designs to bring home to himself, he will take care of, that they want not for their journey. This is applicable to the grace laid up for us in Jesus Christ, from whom all good flows to us, as the water to Israel out of the rock, for that Rock was Christ. The spiritual blessings of redemption, and the rescue of the church from antichristian tyranny, are here pointed to. But whatever changes take place, the Lord warned impenitent sinners that no good would come to them; that inward anguish and outward trouble, which spring from guilt and from the Divine wrath, must be their portion for ever.