For if we sin willfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sin. But a certain fearful looking for judgement and fiery indignation, which shall devour the adversaries. Hebrews 10:26,27
When people turn from Christ's once-for-all, perfect sacrifice back to their old ways and defiantly and wilfully disobey God, there is no more a sacrifice for such apostasy.
And the priest shall make an atonement for the soul that sinneth ignorantly, when he sinneth ignorantly before the Lord, to make an atonement for him; and he shall be forgiven. Ye shall have one law for him that sinneth through ignorance, both for him that is born among the children of Israel, and for the stranger that soujourneth among them. But the soul that doeth aught presumptuously, whether born in the land, or a stranger, the same reproacheth the Lord; and that soul shall BE CUT OFF FROM AMONG HIS PEOPLE. BECAUSE HE HATH DESPISED THE WORD OF THE LORD, AND HATH BROKEN HIS COMMANDMENT, THAT SOUL SHALL UTTERLY BE CUT OFF; [[[[[HIS INIQUITY SHALL BE UPON HIM]]]]] Numbers 15:28-31