One Sacrifice That Takes Away Our Sin

For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect. For then would they not have ceased to be offered? Because that the worshippers once purged should have had no more conscience of sins. But in those sacrifices there is a remembrance again made of sins every year. For it is not possible that the blood of bulls and of goats should take away sins.
Wherefore when He cometh into the world, He saith, “Sacrifice and offering Thou wouldest not, but a body hast Thou prepared Me: in burnt offerings and sacrifices for sin Thou hast had no pleasure. Then said I, ‘Lo, I come (in the volume of the book it is written of me,) to do Thy will, O God.’ ”
Above when He said, “Sacrifice and offering and burnt offerings and offering for sin Thou wouldest not, neither hadst pleasure therein;” which are offered by the law; then said He, “Lo, I come to do thy will, O God.” He taketh away the first, that He may establish the second. By the which will we are sanctified through the offering of the body of Jesus Christ once for all.
Hebrews 10:1-10