This question is based on a few assumptions:
1.) We know that we're saved "by grace through faith, it is a gift of God, not of works, lest anyone should boast." - Ephesians 2:8
2.) We know that God never takes away our free will, our choice, and that we can always choose to turn away from Him. Thus "if we sin willfully after we have received the knowledge of the truth, there no longer remains a sacrifice for sins, but a certain fearful expectation of judgement, and fiery indignation which will devour the adversaries." "Now the just shall live by faith; But if anyone draws back, My soul has no pleasure in him." - Hebrews 10:26-27, 38
3.) We know that the "Christian" in our question truly is/was converted and saved to begin with.
So based on those three assumptions, my question is this:
If we have accepted Jesus Christ as our Lord and Savior, yet are obviously not perfect, at what point do we lose our salvation if we sin? If a Christian gives in to temptation and has sex outside of marriage, or smokes a cigarette, or drinks a beer, or lies, or hates (which Christ said was as murder), or whatever his particular weakness is...is he still saved at that point?
If the Christian dies while indulging in a sin, can he expect heaven or hell? Do we lose our salvation every time we sin until we repent of that sin? Or, is it only after repeated sin, a willful decision that we're not going to follow God's law and don't even want to, that we lose our salvation?
What do you think?
"My little children, these things I write to you, so that you may not sin. And if anyone sins, we have an Advocate with the Father, Jesus Christ the righteous." "Therefore He is also able to save to the uttermost those who come to God through Him, since He always lives to make intercession for them." - 1 John 2:1, Hebrews 7:25