Aineo,
Hello. I'm certainly not trying to sound smart or anything, but I think you need to study your bible. Any professing christian who believes you can be saved and then be unsaved, lost and then found and then lost again, obviously is basing their salvation on something he or she is doing. Paul said in Ephesians 2:8,9 "For by grace are ye saved through faith; and that NOT OF YOURSELVES: it is the gift of God: NOT OF WORKS, lest any man should boast." You cannot save yourself, and you cannot unsave yourself, and God is not an "indian giver" so to speak, he doesn't give us the free gift of eternal life and then take it away just because we mess up. If we were to lose our salvation, who's fault would it be? It would be Jesus's fault, and why? because we are his workmanship as it says in verse 10 of Ephsians 2, we are the clay and he is the potter and he won't mess up.Only professing christians who rely on their church memberships, their baptism, their good works, they have christianity in their heads, but not in their hearts etc., are like a dog that goes back to their vomit and like a sow that goes back to wallowing in the mire as it says in 2 Peter 2:22. Nowhere in the bible does it call God's people a dog or a sow, we are his "sheep" and he is our Shepherd. Jesus said in John chapter 10 that he gives us eternal life, well, it wouldn't be eternal if we could lose it, and he says that we shall never perish, "never" means never, and he said that no one can pluck us out of his hand or his Father's hand, and no Aineo, you can't pluck yourself out of his hand either, for he is much stronger than us. We are "KEPT by the power of God" {1 Peter 1:5}, and we are "SEALED unto the day of redemption" {Ephesians 4:30}. We don't go from being sealed to unsealed, we don't go from being saved to unsaved, we don't go from being a new creature back to being an old creature.
If we sin, and we will, because christians are not perfect,God will not take away our salvation, but he will chasten us as it says in Hebrews 12:6. If a professing christian decides to walk away from God and not be a christian anymore, or if he or she back slides so far as to go back and stay back n the world for any length of time, then he or she was never a true born again christian to begin with, because Jesus Christ owns us lock, stock, and barrel, "For ye are bought with a price....." {1 Cor. 6:20, 7:23} we are his, and 'he cannot deny himself" {2 Tim. 2:13} Hebrews chapter 6:4-6 is not talking about christians losing salvation. Those verses refer to people who had TASTED of the heavenly gift, the key word is "taste", they tasted it, but spit it out so to speak saying "no I don't want to get saved, I'm not ready". They were enlightened by the truth and felt Holy Spirit conviction, but said "no". They had christianity in their heads, they can quote scripture after scripture, but they haven't got it in their hearts so they are still lost. I once heard some one say that that refers to the Jews who were still going by the OT law instead of trusting in the gospel of Christ, They were enlightened by the gospel but rejected it, and besides, there is such a thing as saying 'no" once too often, and then God will harden a person's heart so that it will be impossible to get saved. I know that Heb. chapter 6 is not refering to christians losing salvation.
Some people say that Judas lost his salvation when he betrayed Jesus for 30 pieces of silver, well, Judas didn't lose his salvation because he never had it, Jesus called Judas a devil in John 6:70, and the "son of perdition" in John 17:12. In order for the scripture to be fulfilled about Jesus being betrayed, he pick Judas, and Jesus said that in verse 12 of John 17, so Juda was never saved. Many a so called christian back slide but if they were truly born again, they will come back, probably through chastening, and some people back slide and don't return to the Lord simply because they were never born again in the first place, in other words, they back slid because they never front slid. In Matt.chapter 7 when the phoney christians say, "Lord,Lord,have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? Jesus will say, "I NEVER knew you". It doesn't say, "I used to know you but not anymore", no, they were never saved, so they didn't lose salvation.
One more verse just came to mind, 1 John 3:9, "......his seed REMAINETH in him...." Oh, one more came to mind, John 5:24, "Verly, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath EVERLASTING life, and shall NOT come into condemnation; but is passed from death unto life". John 3:15 says 'ETERNAL life', and verse 16 has "EVERLASTING life". OSAS is indeed biblical Aineo.