Hebrews 3:13

3:13 But exhort one another each day, as long as it is called “Today,” that none of you may become hardened by sin’s deception.

Hebrews 10:2

10:2 For otherwise would they not have ceased to be offered, since the worshipers would have been purified once for all and so have no further consciousness of sin?

Hebrews 13:11

13:11 For the bodies of those animals whose blood the high priest brings into the sanctuary as an offering for sin are burned outside the camp.