Not as disappointed as I am with you.
No you have not because those specific words are not found in the Bible.
Typical on the surface, biased interpretations of losing salvation. Those who are truly born of God have received a new nature, a divine nature, along with new desires. They have been transformed from pigs and dogs into sheep. The change is more than merely cosmetic, as in 2 Peter 2:20. *These cleaned up on the outside dogs and pigs were never sheep.
Compare 2 Peter 1:4 -
"partakers of the divine nature, having escaped the
corruption - Strongs #5356 that is in the world through lust with 2 Peter 2:20 - with they escaped the
pollutions - Strongs #3356 (different Greek word) of the world through the knowledge of the Lord and Saviour Jesus Christ, yet they are again entangled therein, and overcome. *Notice that 2 Peter 2:20
did not mention them being "partakers of the divine nature."
Corruption (Strongs #5356) (to shrivel or wither, spoil , ruin , deprave, corrupt , defile, to destroy by means of corrupting, to spoil as does milk). Corruption - describes decomposition or rotting of an organism and the accompanying stench. The utter depravity of the fallen flesh and the resultant moral decomposition of the world opposed to God is driven by it sinful lusts or evil desires.
Internal corruption.
Pollutions/Defilements (Strongs #3393) ("pollutions", "filthy things", "contaminations", "world's filth") describes the state of being tainted or stained by evil and refers to impurity, impure, tainted, defilement, foulness or pollution. Pollutions/Defilement refers to what is on the
outside (2 Peter 2:20). But genuine believers have escaped the corruption that is in the world through lust (2 Peter 1:4).
*Corruption is deeper than pollutions/defilements on the outside: it is decay on the inside.
Having the knowledge of Jesus Christ does not save a person if there is
no heart submission to that knowledge. The latter end is worse than the beginning for these people because rejecting this knowledge will make them more accountable at the judgment. *Judas Iscariot is a good example of someone who rejected the knowledge of the Lord and Savior Jesus Christ and was never saved.
In Hebrews 10:26, To "sin willfully" in the Greek carries the idea of deliberate intention that is habitual, which stems from rejecting Christ deliberately. This is CONTINUOUS ACTION - A MATTER OF PRACTICE. Now we don't walk along our daily life and "accidentally" fall into a pit called sin. We exercise our will but, the use of the participle clearly shows a CONTINUOUS ACTION. 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).
*Notice how I properly harmonize scripture with scripture before reaching my conclusion on doctrine.
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" (Hebrews 10:10) and in verse 14, we read,
"perfected for all time those who are sanctified." (Hebrews 10:14) *Also, in Romans 8:30, we read - Moreover whom He predestined, these He also called; whom He called, these He also justified;
and whom He justified, these He also glorified. *ALL of them.
*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." The reference to "the blood of the covenant that sanctified him" in verse 29 "on the surface" appears to be referring to a Christian, but this overlooks the fact that the word translated "sanctified" (which is the verb form of the adjective "holy") which means
"set apart," and doesn't necessarily refer to salvation.
*In 1 Corinthians 7:14, Paul uses it to specifically refer to non-Christians who are "sanctified" or "set apart" by their believing spouse.
(And by this Paul does not mean that they are saved). A non-Christian can be "set apart" from other non-Christians without experiencing salvation as Paul clearly explained. So the word "sanctified" means to be "set apart." If the word "sanctified" simply meant saved, then you would have to say that the Sabbath was saved (Genesis 2:3), the tabernacle was saved (Exodus 29:43), the Lord was saved (Leviticus 10:3), the Father saved the Son (John 10:36) and many other things that do not line up with scripture.
In verse 39, the writer of Hebrews sets up the CONTRAST that makes it clear to me that he was referring to unbelievers and 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 participant in the Hebrew Christian community of believers, but who has committed apostasy by renouncing 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 was only superficial and that he was among them, but not of them.
I have explained nothing away, but have properly harmonized scripture with scripture.