Hebrews 10:3 - Matthew Poole's English Annotations on the Holy Bible

If the legal sacrifices could have perfected their offerers, there would have been no remembrance of sins; but there is a remembrance of sins yearly, therefore they are weak and cannot perfect. These shadowy-sacrifices yearly reiterated, still left sins in their guilt and killing power, loading and grinding the conscience by accusation and condemnation for them, as well as setting them in the light of God's countenance. For in the expiation day Aaron was to remember and to confess over the head of the scape-goat, laying his hands on it, all the church's sins of the past year and life, notwithstanding former expiatory sacrifices offered for them, Leviticus 16:22. For as soon as that was done, their expiating virtue vanished, and so they renewed sacrifices without any spiritual profit by them, the guilt of past and present sins remaining still: whereas Christians now renewing sin, do renew their faith and repentance, but not their sacrifice for it; the virtue of which, in a full and final absolution, applied to them by the Spirit, makes them to have, upon their final accounts, no conscience of sin for ever.