Hebrews 8:7
For if that first agreement had been perfect, there would have been no occasion for a second one.
Hebrews 7:11
Now if anything final had been really accomplished through the Levitical priesthood, for even the giving of the Law was based upon it, what further need would there have been of appointing a different priest of the priesthood of Melchizedek, instead of choosing one of the priesthood of Aaron?
Hebrews 7:18
So an earlier regulation is abrogated because it was poor and ineffective
Galatians 3:21
Is the Law then contrary to God's promises? By no means. For if a law had been given that could have brought life, uprightness would really have come through law.
Hebrews 8:6
But, as it is, the priestly service to which Christ has been appointed is as much better than the old as the agreement established by him and the promises on which it is based are superior to the former ones.