Yes, I know. You're doing it again. Since they did not persevere you instantly reject any suggestion or proof that the person was ever saved to begin with and so you decide that 'sanctified' can only be in reference to unbelievers made clean for contact by believers. Even though the writer himself says that 'sanctified' is the person forever made perfect in Christ (a saved person). And that the writer says 'forever' means that Christ's ministry does not need to be repeated, not that you can't lose it.
As I already explained numerous times, in context, to "sin willfully" in the Greek carries the idea of deliberate intention that is habitual, which stems from rejecting Christ deliberately, continuous action, a matter of
practice. The
unrighteous practice sin (1 Corinthians 6:9-10; Galatians 5:19-21);
not the righteous, who are born of God (1 Corinthians 6:11; 1 John 3:9).
Also, if the word 'sanctified' in Hebrews 10:29 is used to describe saved people who lost their salvation as you teach, then we have a
contradiction because the writer of Hebrews in verse 10 said
"sanctified through the offering of the body of Jesus Christ
once for all and in verse 14, we read,
"perfected for all time those who are sanctified." So in Hebrews 10:10, we clearly read
..WE have been sanctified through the offering of the body of Jesus Christ
once for all. In Hebrews 10:14, we read - For by one offering He has
perfected for all time THOSE who are sanctified. To go from sanctified back to un-sanctified would be in
contradiction here. *NOWHERE in the context does it specifically say the person who "trampled under foot the Son of God, and has regarded as unclean the blood of the covenant" was "saved" and/or "lost their salvation."
In 1 Corinthians 7:14, Paul uses the word
'sanctified' to refer to non-Christians who are
"set apart" by their believing spouse. (And by this Paul does not mean that they are saved). A non-Christian can be "set apart" without experiencing salvation as Paul explained.
In verse 39, the writer of Hebrews sets up the
CONTRAST that makes it clear to me that he was referring to unbelievers/nominal Christians, not saved people: But
WE are not of those who draw back to perdition, but
OF THOSE who believe to the saving of the soul. Those who
draw back to perdition do not believe to the saving of the soul and those who
believe to the saving of the soul do not draw back to perdition.
So after considering the
CONTEXT, it seems most likely that "he was sanctified" should be understood in the sense of someone who had been "set apart" or identified as a professing believer in the Hebrew Christian community of believers, but later renounces his identification with other believers, by rejecting the "knowledge of the truth" that he had received, and trampling under foot the work and the person of Christ himself.
This gives evidence that his identification with the Hebrew Christian community of believers was only superficial and that he was not a genuine believer.
It looks someone else from the Hebrews 10v26 thread gets it!
Like Judas, I believe that those being discussed in Hebrews 10:26-27 were 1st Century Jewish ~almost~ Christians, IOW, they were Jews who knew who Jesus was, but who never came to saving faith in Him, NEVER became Christians. Instead, they continued to reject Him as their Lord and Savior and turned back to Judaism, but in doing so, they also turned away from the one and only sacrifice for their sins (as was confirmed earlier in the same Chapter, the blood of bulls and goats cannot save anyone .. Hebrews 10:4). I continue:
Habitual sin/living a life that is characterized by sin (a sinful "lifestyle", if you will) is what the unregenerate are guilty of, NOT believers. That's the additional point that I was attempting to make here, that no one who God has changed and caused to be born again continues on in their new life in Christ in the same manner that they lived it before they were saved, in continual/habitual sin, as a "lifestyle". If they do, then I believe that their claim of becoming a Christian should not be regarded as anything more than that, a "claim".
As the Apostle John also tells us,
1 John 3
9 No one born of God makes a practice of sinning, for God’s seed abides in him; and he cannot keep on sinning, because he has been born of God.
Jesus saved us from the penalty of our sins, but He also saved from our former inclination/desire to continue in sin in this life. Though we all continue to sin (and still need to seek forgiveness for it whenever we do), true believers do not sin like we did before we were saved, habitually/as a lifestyle. When we sinned as non-Christians, we did so ~according~ to our (fallen) nature, but when true Christians sin, we do so ~against~ our new nature .. cf Ephesians 4:22-24.