Hebrews 10:14

For by one offering he hath perfected for ever them that are sanctified.

This summation clincher, as to the superiority of Christ's sacrifice, exploits the fact that he needed only ONE offering to accomplish everything that millions of offerings under the law could not do, namely, provide forgiveness of sins.

Them that are sanctified are not to be identified as those who have by means of personal devotion, prayer and study, achieved some more than ordinary holiness, but as encompassing all the redeemed of all the ages who, through Christ alone, have received all that is necessary to be set apart unto eternal life. The greatness of that one sacrifice received further emphasis under "The Blood of Christ," above.