Just my two cents: for those that ask how someone can "choose" not to remain/abide in Christ, there's a verse in Hebrews that settles it for me:
Hebrews 10:39 But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul.
The author of Hebrews makes a distinction between two types of people: Those that just hang out with Jesus, and those that actually believe to the saving of their soul.
One last comment: Sorry, DefenderoftheFaith, but your interpretation of Hebrews 3:12 (“Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.”) has a wrong emphasis. Try this instead:
Hebrews 3:12 {KJV}
“Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.”
Now, using the context of the entire verse, the author is indicating that there may be one, or two, or a few that actually have a heart of unbelief. And since we all know that unbelief will keep us from God, how can you say that people with a heart of unbelief have lost their salvation? Or can you somehow prove, via this verse or the surrounding context of the passage, that they ever had salvation in the first place?
Hebrews 10:39 But we are not of them who draw back unto perdition; but of them that believe to the saving of the soul.
The author of Hebrews makes a distinction between two types of people: Those that just hang out with Jesus, and those that actually believe to the saving of their soul.
One last comment: Sorry, DefenderoftheFaith, but your interpretation of Hebrews 3:12 (“Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.”) has a wrong emphasis. Try this instead:
Hebrews 3:12 {KJV}
“Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God.”
Now, using the context of the entire verse, the author is indicating that there may be one, or two, or a few that actually have a heart of unbelief. And since we all know that unbelief will keep us from God, how can you say that people with a heart of unbelief have lost their salvation? Or can you somehow prove, via this verse or the surrounding context of the passage, that they ever had salvation in the first place?