Hebrews 9:7

9:7 But only the high priest enters once a year into the inner tent, and not without blood that he offers for himself and for the sins of the people committed in ignorance.

Hebrews 9:28

9:28 so also, after Christ was offered once to bear the sins of many, to those who eagerly await him he will appear a second time, not to bear sin but to bring salvation.

Hebrews 10:9

10:9 then he says, “Here I am: I have come to do your will.” He does away with the first to establish the second.