In all likelihood all of us can name an individual off their head who they consider to be a text-book example of apostasy. While of course few would consider themselves apostates and Christians at the same time, very few Christians, in my opinion, ponder their chances of going rogue and turning apostates.
To get back to the OP:
We all hear of men like Charles Templeton.
http://www.cstnews.com/bm/other-hot...athetic-preacher-dies-in-unbelief~print.shtml
--He preached alongside Billy Graham in some of his great crusades. And then suddenly apostatized. How could it be? Apparently Templeton could never come to grips with the inspiration of the Scriptures, and even though had the ability to preach a great sermon was probably never saved in the first place.
The Lord knows them that are his.
Is there any chance of completely renouncing your faith....treading underfoot the Son of God,counting the blood of the covenant that sanctified you as unholy, and despising the Spirit of grace like the subject of this verse?
Hebrews 10:29 (KJV)
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? .
PS
Please include a brief rationale for your answer.
There is a lot of misunderstanding about the Book of Hebrews. I am sure there will be some that disagree with me, nevertheless, I disagree with your assumption that this verse can be used for a believer losing his salvation. Far from it.
First, the overall context of the entire book must be considered. The author was writing to discouraged Hebrew Christians. Like Muslim converts of today they had been cast out of their own families, persecuted by them, as well as the Roman government. They, in many cases, had nothing left to turn to.
The author says:
Hebrews 10:34 For ye had compassion of me in my bonds, and
took joyfully the spoiling of your goods, knowing in yourselves that ye have in heaven a better and an enduring substance.
--Their houses had been ransacked, their goods taken, and they had nothing left.
How easy would it be to "turn back" to "Temple Worship," to go back to the priests, their families, their old form of worship, that which they were comfortable with, than face all this persecution. The problem was (just like a Muslim today), once you become a Christian you cannot turn back to false religion like Judaism or Islam. It is impossible. Thus the author shows how much better is true biblical Christianity than what they had before--their worship in Judaism (which they cannot return to). It is impossible. (And it is impossible for a converted Muslim today to turn back to Islam).
Hebrews 10:28 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?
--Here is the comparison again.
Those that despised Moses law were punished severely. According to Deu.17:2-6, he died without mercy. He was put to death according to the law.
What about those who have trodden under foot the Son of God..? A true Christian who has the Holy Spirit dwelling in Him cannot do such a thing.
They are "sanctified" or set apart by Christ. How can he count the blood of the covenant by which he was sanctified unholy? He cannot. But that is what he would be doing if he were to return to the Temple, and start offering Old Testament sacrifices again.
He can't go back. Over and over again the writer admonishes: "Let us go on..." They can't go back; they must go on...go on unto perfection or completion...look unto Jesus, not being discouraged.
This is a sin a believer cannot commit. A believer cannot lose his salvation.