Hebrews 7:27
Context7:27 He has no need to do every day what those priests do, to offer sacrifices first for their own sins and then for the sins of the people, since he did this in offering himself once for all.
Hebrews 10:1
ContextConcluding Exposition: Old and New Sacrifices Contrasted
10:1 For the law possesses a shadow of the good things to come but not the reality itself, and is therefore completely unable, by the same sacrifices offered continually, year after year, to perfect those who come to worship. 1
Hebrews 11:4
Context11:4 By faith Abel offered God a greater sacrifice than Cain, and through his faith 2 he was commended as righteous, because God commended him for his offerings. And through his faith 3 he still speaks, though he is dead.

