Mixing the Mosaic Covenant with the New Covenant

Dr. Couch, is there a mixing between the Mosaic covenant (the Law) with the New covenant? It seems that is the case in Deuteronomy 30, especially verse 6, where it is mentioned that someday God would "circumcise their hearts and the hearts of your descendants to love the Lord your God with all your heart and with all your soul in order that you may live." ANSWER:  Verse 6 is a preview of the coming of the New covenant, but this is not a mixing of the two covenants. Moses gives to Israel an order of what God is doing with the nation. (1) When God is finished bringing the blessing and the cursing on Israel (v. 1), (2) Then Israel will return to the Lord and obey Him with all their hearts. (3) Then they will return to the land (v. 5), and (4) God will circumcise their heart to love Him (v. 6). (5) God will afflict their enemies (v. 7), and (6) They shall prosper (v. 9). This will happen (7) WHEN they obey the Lord their God, keep His statutes, and turn to Him with all their heart and soul (v. 10).    Actually, there is a contrast between the Mosaic covenant and the New covenant (Jeremiah 31:31-37). The New covenant "is not like the covenant (the Mosaic covenant) which I made with their fathers in the day I took them by the hand to bring them out of the land of Egypt, My covenant which they broke ..." (v. 32).    The New covenant replaced the "old" covenant, the Mosaic covenant, as mentioned by the writer of Hebrews who said: "When God speaks of the New covenant, He has made the first (the Mosaic) obsolete (palaioo, paleontology, to make old) and growing old [and it is] ready to disappear" (Heb. 8:13).     The apostle Paul makes it clear we are no longer under the law. "The law was our tutor to lead us to Christ, that we may be justified by faith. But now that faith has come, we are no longer under a tutor (under the law)" (Gal. 3:24-25). And, "by the works of the law no flesh will be justified in [God's] sight ..." (Rom. 3:20).    Thanks for asking.    Dr. Mal Couch (7-10)