your point is wrong..... ERROR. when the Lord Jesus gave his Natural Life... (Blood), that began the END of the OLD COVENANT, and the New Covenant began, Listen and Learn, Hebrews 9:16 "For where a testament is, there must also of necessity be the death of the testator." Hebrews 9:17 "For a testament is of force after men are dead: otherwise it is of no strength at all while the testator liveth." THIS IS WHY THE LORD JESUS RETURNED ON PENTECOST IN SPIRIT. Oh my this is just 2 easy not to understand. so, Jer 31 is NOW.
did you not "HEAR", the Lord Jesus returned in Spirit on the day of Pentecost. listen to the apostle Peter, Acts 2:38 "Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost." Acts 2:39 "For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call."
see, this is why 101G is here, to give understanding.
101G.