The Jewish priests kept offering the blood of animal sacrifices every year, but Christ sacrificed himself once to take away our guilt.

Hebrews 9:23-28

23 So, by rituals like that, it was necessary for the priests to cleanse the things that symbolized what Christ does [MTY] in heaven. But God has to consecrate the people who will enter [MTY] heaven by means of better sacrifices than those. 24 Christ did not enter a sanctuary that humans made. That one only represented the true sanctuary. Instead, he entered heaven itself, in order to now be in God’s presence to plead with God for us. 25 The Jewish Supreme Priest enters the very holy place once every year, taking blood that is not his own, to offer it as a sacrifice. But when Christ entered heaven, it was not in order to offer himself repeatedly like that. 26 If that were so, he would have needed to suffer and shed his blood repeatedly since the time when God created the world. But instead, in this final age, Christ has appeared once in order that by sacrificing himself he could cause that people no longer will be punished for their sins. 27 All people must die once, and after that God will judge them for their sins. 28 Likewise, when Christ died, God offered him once to be a sacrifice, to punish him instead of the many people who had sinned. He will come to earth a second time, not in order to sacrifice himself again for those who have sinned, but in order to complete his saving those who expectantly wait for him.