and return to the LORD your God, you and your children, and obey his voice in all that I command you today, with all your heart and with all your soul,
These verses may be considered either as a conditional promise or as an absolute prediction. I. They are chiefly to be considered as a conditional promise, and so they belong to all persons and all people, and not to Israel only; and the design of them is to assure us that the greatest sinners, if they repent and be converted, shall have their sins pardoned...
Commenting on Deuteronomy 30:1-10
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 Hos 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...
And shalt return unto the LORD thy God, and shalt obey his voice according to all that I command thee this day, thou and thy children, with all thine heart, and with all thy soul; (b) In true repentance there is no hypocrisy.