Hebrews 10:1-2

1For the Law, since it has only 1a shadow of 2the good things to come and not the 3form of those things itself, 4can 5never, by the same sacrifices which they offer continually every year, 6make those who approach perfect.

2Otherwise, would they not have ceased to be offered, because the worshipers, having once been cleansed, would no longer have had 7consciousness of sins?