[Jeff]

James 1:12 Blessed is the man that endureth temptation: for when he is tried, he shall receive the crown of life, which the Lord hath promised to them that love him.

What about those who don’t endure? Do they still get the crown of life?

This is speaking of rewards, much as a medal awarded to an athlete. Do you think we'll all receive the same rewards in Heaven? Do you think I'll receive the same honors as a martyr who has been faithful unto death?

Matthew 24:13 But he that shall endure unto the end, the same shall be saved.

Does "saved" used here refer to salvation, or is it just saying they will survive until the Second Advent?

Timothy 4:10 For Demas hath forsaken me, having loved this present world, and is departed unto Thessalonica; Crescens to Galatia, Titus unto Dalmatia.

This verse doesn't address Demas' salvation at all, so what can we read in to it?

Hebrews 6:4 For it is impossible for those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Ghost,
5 And have tasted the good word of God, and the powers of the world to come,
6 If they shall fall away, to renew them again unto repentance; seeing they crucify to themselves the Son of God afresh, and put him to an open shame.
7 For the earth which drinketh in the rain that cometh oft upon it, and bringeth forth herbs meet for them by whom it is dressed, receiveth blessing from God:
8 But that which beareth thorns and briers is rejected, and is nigh unto cursing; whose end is to be burned.

I see this whole statement is addressing an impossibility. At the risk of sounding ridiculous I might say something like, "It is impossible that if you were to flap your arms and fly to Mars that you could survive without an oxygen tank."

I beleive this passage is actually addressing the all-sufficiency of the sacrifice of Christ. If Christ's sacrifice wasn't sufficient to save us and keep us saved once and for all, then there is no hope of any other sacrifice. I do also see this as a warning to those who profess to be Christian, but think they can give it up and take it back up again as suits their free will.

A true Christian will bear fruit, not briars and thorns.

Galatians 1:8 But though we, or an angel from heaven, preach any other gospel unto you than that which we have preached unto you, let him be accursed.

This is teaching how we should deal with false teachers. Can a true Christian teach false doctrine? I think so, but is this talking about differences on minor points, or about heresy? Can a true Christian teach heresy? Even if he could he would still need to be shunned.

2 Peter 3:17 Ye therefore, beloved, seeing ye know these things before, beware lest ye also, being led away with the error of the wicked, fall from your own stedfastness.

What does stedfastness have to do with salvation? Again, even though I believe in eternal security there are still standards of obiedience I need to meet to be pleasing to the Lord to meet His will.

Revelation 2:22 Behold, I will cast her into a bed, and them that commit adultery with her into great tribulation, except they repent of their deeds.

I think repentence has been considered before. Do you consider repentance a work?