Verse 2. - And shalt return unto the Lord thy God; retrain from the worship of false gods to worship and serve Jehovah the one true God, the God of their fathers, and the God whom as a nation they had before wet-shipped (cf. Nehemiah 1:8, 9).

30:1-10 In this chapter is a plain intimation of the mercy God has in store for Israel in the latter days. This passage refers to the prophetic warnings of the last two chapters, which have been mainly fulfilled in the destruction of Jerusalem by the Romans, and in their dispersion to the present day; and there can be no doubt that the prophetic promise contained in these verses yet remain to come to pass. The Jewish nation shall in some future period, perhaps not very distant, be converted to the faith of Christ; and, many think, again settled in the land of Canaan. The language here used is in a great measure absolute promises; not merely a conditional engagement, but declaring an event assuredly to take place. For the Lord himself here engages to circumcise their hearts; and when regenerating grace has removed corrupt nature, and Divine love has supplanted the love of sin, they certainly will reflect, repent, return to God, and obey him; and he will rejoice in doing them good. The change that will be wrought upon them will not be only outward, or consisting in mere opinions; it will reach to their souls. It will produce in them an utter hatred of all sin, and a fervent love to God, as their reconciled God in Christ Jesus; they will love him with all their hearts, and with all their soul. They are very far from this state of mind at present, but so were the murderers of the Lord Jesus, on the day of Pentecost; who yet in one hour were converted unto God. So shall it be in the day of God's power; a nation shall be born in a day; the Lord will hasten it in his time. As a conditional promise this passage belongs to all persons and all people, not to Israel only; it assures us that the greatest sinners, if they repent and are converted, shall have their sins pardoned, and be restored to God's favour.And shalt return unto the Lord thy God,.... By repentance, acknowledging their manifold sins and transgressions, particularly their disbelief and rejection of the Messiah, now seeking him and salvation by him; see Hosea 3:5,

and shalt obey his voice; in the Gospel, yielding the obedience of faith to that; embracing the Gospel, and submitting to the ordinances of it:

according to all that I command thee this day, thou, and thy children; which was to love the Lord, and walk in his ways, directed to in the Gospel, and which were to be regarded from a principle of love to God and the blessed Redeemer; see Deuteronomy 30:6,

with all thine heart and with all thy soul; that is, both their return unto the Lord, and their obedience to his voice or word, should be hearty and sincere; which being the case, the following things would be done for them.