Hebrews 10:1-18

Since the law has only a shadow of the good things to come, and not the reality itself of those things, it can never perfect the worshipers by the same sacrifices they continually offer year after year. Otherwise, wouldn’t they have stopped being offered, since the worshipers, purified once and for all, would no longer have any consciousness of sins? But in the sacrifices there is a reminder of sins year after year. For it is impossible for the blood of bulls and goats to take away sins.

Hebrews 10:5–10 CSB

Therefore, as he was coming into the world, he said: You did not desire sacrifice and offering, but you prepared a body for me. You did not delight in whole burnt offerings and sin offerings. Then I said, “See— it is written about me in the scroll— I have come to do your will, God.” After he says above, You did not desire or delight in sacrifices and offerings, whole burnt offerings and sin offerings (which are offered according to the law), he then says, See, I have come to do your will. He takes away the first to establish the second. By this will, we have been sanctified through the offering of the body of Jesus Christ once for all time.

Hebrews 10:11–18 CSB

Every priest stands day after day ministering and offering the same sacrifices time after time, which can never take away sins. But this man, after offering one sacrifice for sins forever, sat down at the right hand of God. He is now waiting until his enemies are made his footstool. For by one offering he has perfected forever those who are sanctified. The Holy Spirit also testifies to us about this. For after he says: This is the covenant I will make with them after those days, the Lord says, I will put my laws on their hearts and write them on their minds, and I will never again remember their sins and their lawless acts. Now where there is forgiveness of these, there is no longer an offering for sin.