Deuteronomy 30:2

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.