Hebrews 8:7

For if that first covenant had been faultless, no place would have been sought for the second. [But it was not].

Hebrews 7:11

If therefore there was perfection through the Levitical priesthood,??or the people received the law under it,??hat need was there that another priest should arise after the order of Melchisedec and not to be called after the order of Aaron?

Hebrews 7:18

For there is an abrogation of the commandment which goes before, on account of its weakness and unprofitableness;

Galatians 3:21

Is the law then against the promises of God? By no means. For if a law had been given, able to give life, righteousness would really have been by the law;

Hebrews 8:6

but now he has obtained a more excellent service, by as much also as he is the mediator of a better covenant, which is established on better promises.

Treasury of Scripture Knowledge

Summary

For if that first covenant had been faultless, then should no place have been sought for the second.

Bible References

Had

Hebrews 8:6
but now he has obtained a more excellent service, by as much also as he is the mediator of a better covenant, which is established on better promises.
Hebrews 7:11
If therefore there was perfection through the Levitical priesthood,??or the people received the law under it,??hat need was there that another priest should arise after the order of Melchisedec and not to be called after the order of Aaron?
Galatians 3:21
Is the law then against the promises of God? By no means. For if a law had been given, able to give life, righteousness would really have been by the law;