Hebrews 7:19

7:19 for the law made nothing perfect. On the other hand a better hope is introduced, through which we draw near to God.

Hebrews 7:28

7:28 For the law appoints as high priests men subject to weakness, ¹  but the word of solemn affirmation that came after the law appoints a son made perfect forever.

[7:28]  ¹ sn See Heb 5:2 where this concept was introduced.