Hebrews 8:7
For if that first covenant had been faultless, there would have been no occasion to look for a second.
Hebrews 7:11
Now if perfection had been attainable through the Levitical priesthood (for under it the people received the law), what further need would there have been for another priest to arise after the order of Melchizedek, rather than one named after the order of Aaron?
Hebrews 7:18
For on the one hand, a former commandment is set aside because of its weakness and uselessness
Galatians 3:21
Is the law then contrary to the promises of God? Certainly not! For if a law had been given that could give life, then righteousness would indeed be by the law.
Hebrews 8:6
But as it is, Christ has obtained a ministry that is as much more excellent than the old as the covenant he mediates is better, since it is enacted on better promises.