Hey, we agree on something!
We are saved by grace through faith, faith from beginning to end and not just a one time confession. Consequently, if one stops having faith and goes back into willfully living according to the sinful nature, that individual is accumulating sin and is on their way to death.
"My brothers, if one of you should wander from the truth and someone should bring him back, consider this: Whoever turns a sinner from the error of his way will save his soul from death and cover over a multitude of sins."
In order to wander away from the truth, one would have had to have been in the truth. Notice that if someone brings back the one who wandered away, a multitude of sins are covered over and he is saved from death. Regarding the need to remain in faith Paul said the following:
"Once you were alienated from God and were hostile in your minds because of your evil deeds. But now He has reconciled you by Christ’s physical body through death to present you holy, unblemished, and blameless in His presence— [
if] indeed you continue in your faith, established and firm, not moved from the hope of the gospel you heard, which has been proclaimed to every creature under heaven, and of which I, Paul, have become a servant. - Col.1:22
"We have come to share in Christ
if we hold firmly to the end the assurance we had at first. - Heb.3:14
"By this gospel you are saved,
if you hold firmly to the word I preached to you. Otherwise, you have believed in vain. - 1 Cor.15:2
Salvation is obtained by having faith from start to finish.
"But suppose
that servant is wicked and says in his heart, ‘
My master will be away a long time.’
49And he begins to beat his fellow servants and to eat and drink with drunkards (willfully living according to the sinful nature).
50The master of that servant will come on a day he does not anticipate and at an hour he does not expect.
51Then he will cut him to pieces
and assign him a place with the hypocrites, where there will be weeping and gnashing of teeth."
Eternal security is obtained by faith from beginning to end and not just by a one time confession.
For those who are going to disagreeing, I'm not talking about people who are believers who fall into sin. I'm talking about those who go back into the world and are willfully living according to the sinful nature. We all stumble as believers, committing sin, but those who are truly in Christ are wrestling to overcome sin. When a believer goes back into the world, living according to the sinful nature, then they are no longer wrestling to overcome sin, no longer being transformed in the image of Christ and are no longer bearing fruit. And if they died in that state, they will die in their sins. Consider the following scripture as well:
"For if you forgive men their trespasses, your Heavenly Father will also forgive you.
But if you do not forgive men their trespasses, neither will your Father forgive yours.