On this we have to differ unfortunately.
Hebrews 10:26-29 (KJV)
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?
While you, like many, see this as referring to born again believers losing their salvation, the context denies that.
If you notice there is a contrast between "Moses' Law" (the Covenant of Law, a prominent element of contrast throughout the Book) and the "Covenant sanctified by the Blood (death) of Christ.
In view is not born again believers in danger of losing salvation, but Hebrews in danger of not converting from the Law to the New Covenant.
Secondly, the action condemned is not terminology describing believers, but those who...
1. Tread under foot Christ;
2. Consider His death unholy (and this because they would view the sacrifices of the Law as holy, which they were, as the Law was God ordained);
3. Done despite, or, resisted the Spirit of Grace, which is precisely what we have been discussing: rejecting the Minjstry of the Comforter in revealing the truth for the purpose of conversion.
So the parallel, just as we see in regards to false teachers/false prophets in 2 Peter 2:1, is between those who rejected the First Covenant, and those that reject the New Covenant.
And you just can't make a born again believer out of someone who is guilty of the above. It's just not in the text. It is a direct statement of what they have done, and to make this mean they were saved then fell away stands in direct contradiction to the positive statement that salvation is complete in Christ.
Now watch this, I am going to back up a bit and show you the same statement of v.26 already stated:
Hebrews 10:18
King James Version (KJV)
18 Now where remission of these is, there is no more offering for sin.
Compare with...
Hebrews 10:26
King James Version (KJV)
26 For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,
Again, we see that there is a basic truth presented, there remains no more sacrifice for sin. But, in the first reference we are told where remission of the transgressions is granted, there is no need for further offering, because as he explains throughout the Chapter, Christ's sacrifice brought completion, whereas the sacrifices of the Covenant of Law did not (Hebrews 10:1-4). They could not make the "comer thereunto complete," or, those sacrifices had to be offered over and over due to the incomplete nature of those offerings. The blood of bulls and goats could not take away sins, but, the sacrifice of Christ does., as promised in regards to the day when God when create a New Covenant to replace the old.
But in the second, while the same truth is given, it is speaking to those who were in danger of withdrawing from fellowship (forsaking the assembling of the brethren) because they rejected the New Covenant. The writer's point is that, "If you do that, there is no other sacrifice for sins you can turn to." That includes the sacrifices of the Law, because Christ's had fulfilled in reality what theirs only pictured.
That is why he (the Writer) compares them with those who rejected Moses' Law, and if you notice, what he is saying is that those who tread under foot Christ, consider the New Covenant unholy, and do despite unto the Spirit of Grace...
...will face a far greater judgment than the rejecters of the Covenant of Law:
Hebrews 10:26-29
King James Version (KJV)
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?
And just to finish up on this point, let's look at the statements that make it clear that salvation is complete in Christ, and why:
Hebrews 10
King James Version (KJV)
1 For the law having a shadow of good things to come, and not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.
2 For then would they not have ceased to be offered? because that the worshippers once purged should have had no more conscience of sins.
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.
The simple truth is to point out, as he does in Chapter 9, that the Law was only figure, shadow, parable. It could not make the worshipper (offerer) complete, which speaks of completion, bringing something to it's end. He makes it clear that those sacrifices could not take away sins.
Now see what he says about Christ's Sacrifice:
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.
This is actually the clearest, simplest attestation to the eternality of salvation in Scripture, in my view, and it is ironic this passage is used to teach the exact opposite of what the writer is teaching.
Again we see the contrast between the Two Covenants and their services, the prominent focus being that of Christ's Sacrifice and what it accomplished, which what the offering of the Levitical Priesthood could not do...take away sins. Now we understand that context by including everything he teaches in this chapter, and thus we see that the perfection/completion in view is directly addressing remission of sins. This is why Christ had to die once, contrasted with the daily service of the Law.
If you keep reading you will see that once again the Promise of the New Covenant is mentioned:
15 Whereof the Holy Ghost also is a witness to us: for after that he had said before,
16 This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them;
17 And their sins and iniquities will I remember no more.
18 Now where remission of these is, there is no more offering for sin.
The point being that in view is the realization of the promise, which teaches that when one receives remission of sins through Christ...there is no more offering for sin. But it is a positive statement, not a negative. It is not saying "Hey, there's only one chance to be forgiven," but rather, he is teaching when we receive remission of sins we are made compete/perfect in regards to remission of sins for ever.
And that is a long time, Vooks.
Continued...