Isaiah, Chapter 55, verses 1-11
1 The Prophet, with the promises of Christ, calleth to faith, 6 and to repentance, 8 The happy success of them that believeIsaiah, Chapter 12
1 A joyful thanksgiving of the faithful for the mercies of God12 A thanksgiving of the faithful for their redemption, Isa 12:1-6.
12:1 In that day - When this great work of the reduction of Israel, and conversion of the Gentiles is fulfilled.
12:2 God - My salvation hath not been brought to pass by man, but by the almighty power of God.
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.

55 An invitation to seek for spiritual blessings from Christ, whom the Father sends, Isa 55:1-5.
To come to him speedily and by repentance, Isa 55:6-7.
His grace infinite, Isa 55:8-9.
His word powerful, Isa 55:10-11.
The joy of believers, Isa 55:12-13.
55:1 Thirsteth - For the grace of God and the blessings of the gospel.This thirst implies a vehement, and active, and restless desire after it.No money - Those who are most worthless and wicked, if they do but thirst may be welcome. Buy - Procure or receive that which is freely offered.Wine and milk - All gospel - blessings; in particular, that peace and joy in the Holy Ghost, which are better than wine, and that love of God which nourishes the soul, as milk does the body.
55:2 Money - All your time, and strength, and cost. Not bread - For those things which can never nourish or satisfy you, such as worldly goods, or pleasures. Eat ye - That which is truly and solidly, and everlastingly good. In fatness - In this pleasant food of gospel - enjoyments.
55:3 An everlasting covenant - That everlasting covenant of grace and peace which I made with Abraham, and his seed. Of David - Even that covenant which was made first with Abraham, and then with David, concerning those glorious and sure blessings which God hath promised to his people, one and the chief of which was giving Christ to die for their sins. David here seems to be put for the son of David.
55:4 Behold - I have appointed, and will in due time actually give.Him - The David last mentioned, even Christ. A witness - To declare the will of God concerning the duty and salvation of men, to bear witness to truth, to confirm God's promises, and, among others, those which respect the calling of the Gentiles: to be a witness of both parties of that covenant made between God and men. The people - To all people.
55:5 Thou - Thou, O Messiah. Call - To the knowledge of thyself.Knewest not - With that special knowledge which implies approbation.Because - Because the Lord shall by many tokens, manifest himself to be thy God, and thee to be his son and faithful servant. Glorify thee - By confirming thy word with illustrious signs and miracles, and particularly by thy resurrection, and glorious ascension.
55:6 Seek - Labour to get the knowledge of God's will, and to obtain his grace and favour. While - In this day of grace, while he offers mercy and reconciliation. Near - Ready and desirous to receive you to mercy.
55:7 Return - By sincere repentance, and faith.
55:8 For - If any man injure you, especially if he do it greatly and frequently, you are slow and backward to forgive him. But I am ready to forgive all penitents, how many, and great, and numberless soever their sins be.
55:10 The snow - Which in its season contributes to the fruitfulness of the earth. Returneth not - Without effect. And bread - That it may bring forth store of bread - corn, both for mens present supplies, and for seed for the next year.
55:11 My word - My promises, concerning the pardon of the greatest sinners. Void - Without success.