This is a touchy topic, and one I'm not dogmatic on, but I'd like to share some Scripture that helped me see past my former presuppositions on the matter. Please be patient and understanding, and I pray the Lord will have me be likewise.My question is; is it possible for a person to lose his or her salvation?Short answer: yes.Long answer: if someone is living in sin, they aren't saved, period.1 John 1:6If we say that we have fellowship with Him, and walk in darkness, we lie, and do not the truth.1 John 2:3And hereby we know that we know Him: if we keep His commandments.1 John 2:4He that saith, "I know Him," and keepeth not His commandments, is a liar and the truth is not in him.1 John 2:9He that saith he is in the light and hateth his brother, is in darkness even until now.1 John 3:6Whosoever abideth in Him sinneth not; whosoever sinneth hath not seen Him, neither known Him.1 John 38 He that committeth sin is of the devil, for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that He might destroy the works of the devil.9 Whosoever is born of God doth not commit sin; for His seed remaineth in him, and he cannot sin, because he is born of God.10 By this the children of God are manifest, and the children of the devil: whosoever doeth not righteousness is not of God, neither is he that loveth not his brother.1 John 3:1515 Whosoever hateth his brother is a murderer, and ye know that no murderer hath eternal life abiding in him.1 John 52 By this we know that we love the children of God: when we love God and keep His commandments.3 For this is the love of God: that we keep His commandments; and His commandments are not grievous.1 John 5:18We know that whosoever is born of God sinneth not, but he that is begotten of God keepeth himself, and that wicked one toucheth him not.James 114 But every man is tempted when he is drawn away by his own lust and enticed. 15 Then when lust hath conceived, it bringeth forth sin; and sin, when it is finished, bringeth forth death.James 121 Therefore lay apart all filthiness and the superfluity of wickedness, and receive with meekness the engrafted Word, which is able to save your souls. 22 But be ye doers of the Word and not hearers only, deceiving your own selves. James 126 If any man among you seem to be religious and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.27 Pure religion, undefiled before God and the Father, is this: to visit the fatherless and widows in their affliction, and to keep himself unspotted from the world.James 2:14What doth it profit, my brethren, though a man say he hath faith, and hath not works? Can faith save him?James 217 Even so faith, if it hath not works, is dead, being alone. 18 Yea, a man may say, "Thou hast faith, and I have works." Show me thy faith apart from thy works, and I will show thee my faith by my works. 19 Thou believest that there is one God; thou doest well. The devils also believe -- and tremble. 20 But wilt thou know, O vain man, that faith without works is dead? 21 Was not Abraham our father justified by works when he had offered Isaac his son upon the altar? 22 Seest thou how faith wrought with his works, and by works faith was made perfect? 23 And the Scripture was fulfilled which saith, "Abraham believed God, and it was imputed unto him for righteousness"; and he was called the friend of God. 24 Ye see then how by works a man is justified, and not by faith only. 25 Likewise also, was not Rahab the harlot justified by works when she had received the messengers and had sent them out another way? 26 For as the body without the spirit is dead, so faith without works is dead also.Hebrews 12:14Follow peace with all men, and holiness, without which no man shall see the LordThe question with Eternal Security (or, rather, Perseverance of the Saints) isn't whether someone living in sin is saved, it's whether they ever were saved. Does it matter?Another thing that leads me to question whether there's a practical difference: if you're really saved, and you really love God, wouldn't you want to abstain from all sin simply because of that love for God? If you need to have the threat of hell to keep you from sinning, aren't you still unsaved?For example, if a man sees someone else who is his enemy and is tempted to kill him, even if he doesn't do so it may still be sin. If he doesn't kill the man because there are police around or people who would tell the police, it's still sin. If he doesn't kill the man because the man is important to his social or political agenda or whatnot, it's still sin. If he doesn't kill the man because he believes he would get sent to hell and abstains solely because he doesn't want to go to hell, it's still sin and he's still going! Only if he abstains because God deserves his obediance and he wants to obey God, only then is he free from guilt.But to directly address the question of whether salvation can be lost, I believe this Scripture is very illuminating:James 519 Brethren, if any of you err from the truth and one convert him, 20 let him know that he who converteth the sinner from the error of his way shall save a soul from death, and shall hide a multitude of sins.It's talking to the "Brethren," saying if any of "you" (meaning one of the Brethren) err from the truth (the error is later specified as sin, "the sinner"), and saying that if anyone "convert" the "sinner" from the error of his way, to "know" that he has saved a "soul" from "death" (obviously spiritual, not physical, death).Note that this is not equivalent to "every time you sin you lose your salvation," James 1:14-15 (quoted above) makes it clear (to me, at least) that there's a process involved before actual spiritual death occurs. 1 John 5:16-17 also speaks of some sins not being unto death (a complicated topic in and of itself):1 John 516 If any man see his brother sin a sin which is not unto death, he shall ask and He shall give him life, for those who sin not unto death. There is a sin unto death. I do not say that he shall pray about it.17 All unrighteousness is sin, and there is a sin not unto death.I also believe God generally grants us a "space of repentance" as He gave Jezebel:Revelation 221 And I gave her space to repent of her fornication, and she repented not.If you want a thorough treatment on the issue from the side that answers "yes", try www.evangelicaloutreach.org , Dan Corner (for better or worse) has made Conditional vs. Eternal Security his crusade.God's grace be with you all, in Christ Jesus our Lord,-Keith