@Eleanor
That is not the sin I read.
Hebrews 10:26
For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins, 27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries. 28 He that despised Moses' law died without mercy under two or three witnesses:
29 Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace? 30 For we know him that hath said, Vengeance belongeth unto me, I will recompense, saith the Lord. And again, The Lord shall judge his people. 31 It is a fearful thing to fall into the hands of the living God.
Maybe you need to see how offensive that is for practicing as if there still remains a necessity for sacrifice for sins.
Hebrews 10:3
But in those sacrifices there is a remembrance again made of sins every year. 4 For it is not possible that the blood of bulls and of goats should take away sins.....
This is the willful sin that makes God mad in Hebrews 10:29 by practising as if the blood of the New Covenant is on par with the blood of goats & bulls that it bears repeating,
10 By the which will we are sanctified through the offering of the body of Jesus Christ once for all. 11 And every priest standeth daily ministering and offering oftentimes the same sacrifices, which can never take away sins: 12 But this man, after he had offered one sacrifice for sins for ever, sat down on the right hand of God; 13 From henceforth expecting till his enemies be made his footstool.
14 For by one offering he hath perfected for ever them that are sanctified. 15 Whereof the Holy Ghost also is a witness to us: for after that he had said before,
By having the Holy Ghost in us is Witness to why there is no more need for sacrifice for sins for we are sanctified forever.
But by continuing as if there is still need for sacrifice for sins and treating communion as a means to that end, whoo boy. God is going to be mad.
Unless Catholics and other Protestant believers that may believe in that way repent before the Bridegroom comes, otherwise, they will get left behind at the pre great tribulation rapture event.
Now I am just talking about what Paul is writing about here in regards to what that sin was if they willfully do that in that way, BUT yeah, if a saved believer continues to live in sin, they are at risk of being left behind too unless they look to Him for help to depart from iniquity before the Bridegroom comes, otherwise, stripes will be coming on them from the Father for not resisting sin as mentioned here for not running that race.
Hebrews 10:1Wherefore seeing we also are compassed about with so great a cloud of witnesses,
let us lay aside every weight, and the sin which doth so easily beset us, and let us run with patience the race that is set before us, 2 Looking unto Jesus the author and finisher of our faith; who for the joy that was set before him endured the cross, despising the shame, and is set down at the right hand of the throne of God. 3 For consider him that endured such contradiction of sinners against himself, lest ye be wearied and faint in your minds.
4 Ye have not yet resisted unto blood, striving against sin. 5 And ye have forgotten the exhortation which speaketh unto you as unto children, My son, despise not thou the chastening of the Lord, nor faint when thou art rebuked of him:
6 For whom the Lord loveth he chasteneth, and scourgeth every son whom he receiveth. 7 If ye endure chastening, God dealeth with you as with sons; for what son is he whom the father chasteneth not? 8 But if ye be without chastisement, whereof all are partakers, then are ye bastards, and not sons. 9 Furthermore we have had fathers of our flesh which corrected us, and we gave them reverence: shall we not much rather be in subjection unto the Father of spirits, and live? 10 For they verily for a few days chastened us after their own pleasure; but
he for our profit, that we might be partakers of his holiness.