Hebrews 8:7

If that first Covenant had been faultless, there would have been no occasion for a second.

Hebrews 7:11

If, then, Perfection had been attainable through the Levitical priesthood--and it was under this priesthood that the people received the Law--why was it still necessary that a priest of a different order should appear, a priest of the order of Melchizedek and not of the order of Aaron?

Hebrews 7:18

On the one hand, we have the abolition of a previous regulation as being both inefficient and useless

Galatians 3:21

Does that set the Law in opposition to God's promises? Heaven forbid! For, if a Law had been given capable of bestowing Life, then righteousness would have actually owed its existence to Law.

Hebrews 8:6

But Jesus, as we see, has obtained a ministry as far excelling theirs, as the Covenant of which he is the intermediary, based, as it is, on better promises, excels the former Covenant.

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 Jesus, as we see, has obtained a ministry as far excelling theirs, as the Covenant of which he is the intermediary, based, as it is, on better promises, excels the former Covenant.
Hebrews 7:11
If, then, Perfection had been attainable through the Levitical priesthood--and it was under this priesthood that the people received the Law--why was it still necessary that a priest of a different order should appear, a priest of the order of Melchizedek and not of the order of Aaron?
Galatians 3:21
Does that set the Law in opposition to God's promises? Heaven forbid! For, if a Law had been given capable of bestowing Life, then righteousness would have actually owed its existence to Law.