John Gill Commentary Hebrews 10:8

"Saying above, Sacrifices and offerings and whole burnt offerings and [sacrifices] for sin thou wouldest not, neither hadst pleasure therein (the which are offered according to the law)," — Hebrews 10:8 (ASV)

Above when he said ,
&c.] In the afore cited place, (Psalms 40:7Psalms 40:8)

Sacrifice and offering, and burnt offerings, and offering for sin
you would not, neither had pleasure in them ;
this is a recapitulation of what is before said; and all kind of sacrifices are mentioned, to show that they are all imperfect, and insufficient, and are abolished; and the abrogation of them is expressed in the strongest terms, as that God would not have them, and that he took no pleasure in them:

which are offered by the law ;
according as that directs and enjoins: this clause is added, to distinguish these sacrifices from spiritual ones, under the Gospel dispensation, and which are well pleasing to God; and to prevent an objection against their abolition, based on the fact that they are according to the law; and yet, notwithstanding this, God will not have them, nor accept them.