12:3 With joy - Your thirsty souls shall be filled with Divine graces and comforts, which you may draw from God, in the use of gospel - ordinances.

Isaiah 12:3 Parallel Commentaries

Appendix xiv. The Law in Messianic Times.
THE question as to the Rabbinic views in regard to the binding character of the Law, and its imposition on the Gentiles, in Messianic times, although, strictly speaking, not forming part of this history, is of such vital importance in connection with recent controversies as to demand special consideration. In the text to which this Appendix refers it has been indicated, that a new legislation was expected in Messianic days. The ultimate basis of this expectancy must be sought in the Old Testament …
Alfred Edersheim—The Life and Times of Jesus the Messiah

Opposition to Messiah in Vain
He that sitteth in the heavens shall laugh; the Lord shall have them in derision. T he extent and efficacy [effects] of the depravity of mankind cannot be fully estimated by the conduct of heathens destitute of divine revelation. We may say of the Gospel, in one sense, what the Apostle says of the Law, It entered that sin might abound (Romans 5:20) . It afforded occasion for displaying the alienation of the heart of man from the blessed God, in the strongest light. The sensuality, oppression and …
John Newton—Messiah Vol. 2

The Gospel Message, Good Tidings
[As it is written] How beautiful are the feet of them that preach the Gospel of peace, and bring glad tidings of good things! T he account which the Apostle Paul gives of his first reception among the Galatians (Galatians 4:15) , exemplifies the truth of this passage. He found them in a state of ignorance and misery; alienated from God, and enslaved to the blind and comfortless superstitions of idolatry. His preaching, accompanied with the power of the Holy Spirit, had a great and marvellous effect. …
John Newton—Messiah Vol. 2