Deuteronomy 29
v1-9: Those who have made a commitment to God "should take every opportunity to do so again, being very content with their previous commitment and having no wish to change it." Being reminded of former blessings, and that fresh blessings are still to come in the future, can spur us on in this, and to further obedience to the Lord.
v10-29: "Although God has kept much of his counsel secret" and hidden from us because they are not for us to know, "enough is revealed to satisfy and save us." He only keeps back what we do not need to know. We should "ask about what God has made known" so that "we may do all the words of the law, and be blessed in doing them."
Deuteronomy 30
V1-10: "If sinners would only seriously consider the happiness they have lost because of their sin and the misery they have brought on themselves, and if they realised that if they repented they would escape that misery and recover that happiness, then they would not delay to return to the Lord their God." True repentance must include the putting away of "the ungodly ways of the sinful nature, and the foolishness of the heart," as well as the return to God in obedience to Him "as our Lord and our ruler."
v11-14: "The Law was clear and easy," so people "could never plead as an excuse for their disobedience that God had commanded them to do what was either unintelligible or impracticable, something impossible to be known or to be done." Even the lowliest people can understand the Law, and even more so, the gospel.
v15-20: Like Moses does here, the New Testament "set before us life and death, good and evil." Those who believe shall be saved, and those who do not believe shall perish. Belief in Christ "includes love and obedience" and ongoing faithfulness to Him.