It was also explained the scripture itself
Hebrews 8:13 In that he saith, A new covenant, he hath made the first old. Now that which decayeth and waxeth old is ready to vanish away.
If their is a new and old covenant their won't be a need for a new covenant has been perfect
Hebrews 8:7 For if that first covenant had been faultless, then should no place have been sought for the second.
The old covenant has passed away the new covenant is in existence now that is the second covenant the new and old is not in contradiction from the hour that JESUS CHRIST ascended into heaven their was another covenant
Acts 1:2 Until the day in which he was taken up, after that he through the Holy Ghost had given commandments unto the apostles whom he had chosen:
The commandments of the LORD JESUS CHRIST was given to the Apostle after he has ascended into heaven
If the ten commandments are the commandments we are to obey why did JESUS CHRIST have to send another commandments through the holy spirit the ten commandments given to Moses their is no necessity if it is the the same commandments sent to Moses
httpActs 1:2 Until the day in which he was taken up, after that he through the Holy Ghost had given commandments unto the apostles whom he had chosen: