Giver it looks to me and most others here that you are trying to sidestep the James text. Rather than appealing to yet another text writtten to immature christians, deal with the James text directly from the book of James itself.
In Fact, I find it funny that you keep using the Hebrews 6 text, when in fact Hebrews 5:11-6:11 cleary shows that your proof text is addressed to immature jewish christians.
James 4 (The Message)
James 4
(1 Corinthians 3:1-3) “Brothers, I myself was unable to speak to you as people of the Spirit; I treated you as sensual men, still infants in Christ. What I fed you with was milk, not solid food, for you were not ready for it; and indeed, you are still not ready for it since you are still unspiritual. Isn’t that obvious from all the jealousy and wrangling that there is among you, from the way that you go on behaving like ordinary people? “
Notice Paul was talking to Christians, but said they were still unspiritual. That, he said, was because of their sinning. So obviously they were not mature Christians. Now James was also talking to Christians who were not mature. Now notice in the following Scripture that the Christians who were being addressed were spiritually matures Christians.
You have to see that James was talking to Christians who were still babies in the Lord, and in no way did they fit the category of mature Christians. Because Paul tells the Christians he wrote to they were babies and tells them why and James didn’t, I used Paul’s explanation to explain why James writings were not applicable to this thread.
(Hebrews 10:26-31) “If, after we have been given knowledge of the truth, we should deliberately commit any sins, then there is no longer any sacrifice for them. There will be left only the dreadful prospect of judgment and of the raging fire that is to burn rebels. Anyone who disregards the Law of Moses is ruthlessly put to death on the word of two witnesses or three; and you may be sure that anyone who tramples on the Son of God, and who insults the Spirit of grace, will be condemned to a far severer punishment. We are all aware whom it was that said: Vengeance is mine; I will repay. And again: The Lord will judge his people. It is a dreadful thing to fall into the hands of the living God.”
Giver
1Where do you think all these appalling wars and quarrels come from? Do you think they just happen? Think again. They come about because you want your own way, and fight for it deep inside yourselves. 2You lust for what you don’t have and are willing to kill to get it. You want what isn’t yours and will risk violence to get your hands on it.
You wouldn’t think of just asking God for it, would you? 3And why not? Because you know you’d be asking for what you have no right to. You’re spoiled children, each wanting your own way.
Code:
4You're cheating on God. If all you want is your own way, flirting with the world every chance you get, you end up enemies of God and his way. 5And do you suppose God doesn't care? The proverb has it that "he's a fiercely jealous lover." 6And what he gives in love is far better than anything else you'll find. It's common knowledge that "God goes against the willful proud; God gives grace to the willing humble."
7So let God work his will in you. Yell a loud no to the Devil and watch him scamper. 8Say a quiet yes to God and he'll be there in no time. Quit dabbling in sin. Purify your inner life. Quit playing the field. 9Hit bottom, and cry your eyes out. The fun and games are over. Get serious, really serious. 10Get down on your knees before the Master; it's the only way you'll get on your feet.