No one will die because they sinned, we have all sinned. They will die because they rejected the truth. First they rejected Jesus Christ, through whom alone they could receive forgiveness of their sins unto salvation. Many also who claim to have accepted and recieved this forgiveness, then go on to reject the truths of God's word. They think they can be forgiven while persistently rejecting the truths of God's word. They are mistaken. God's ten commandments are upheld as the standard for Godly living to the very end of the scriptures. Those who reject this truth will die for rejecting the truth, not being sinners, which we all are. Sinners who acknowledge the truth and seek forgiveness for their sins can and will be saved. Sinners which reject the truth as the truth, will also never confess this very sin and therefore never be forgiven of the same. They will be lost.
2Th 2:7 For the mystery of iniquity doth already work: only he who now letteth will let, until he be taken out of the way.
8 And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming: 9 Even him, whose coming is after the working of Satan with all power and signs and lying wonders, 10 And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved. 11 And for this cause God shall send them strong delusion, that they should believe a lie: 12 That they all might be damned who believed not the truth, but had pleasure in unrighteousness.
Rev 22:14 Blessed are they that do his commandments, that they may have right to the tree of life, and may enter in through the gates into the city. 15 For without are dogs, and sorcerers, and whoremongers, and murderers, and idolaters, and whosoever loveth and maketh a lie.
Like I said, the commandments are upheld as the standard right up to the last book and chapter. Those who deny this, deny the truth. They will therefore be among those who loveth and maketh a lie.
It is not as much about perfectly keeping the law, as it is about first and foremost acknowledging the truth in relation to the same. Those who reject the authority of the fourth or any other commandment, reject the truth of God's authority over humanities, unto damnation.
Mt 5:17 ¶ Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfil. 18 For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
19 Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven.
Those who reject the truth of the testimony of our Lord and Savior Jesus Christ will be none of His. They have denied Him in doing so, and He will deny them before the Father.
Mr 8:34 And when he had called the people unto him with his disciples also, he said unto them, Whosoever will come after me, let him deny himself, and take up his cross, and follow me. 35 For whosoever will save his life shall lose it; but whosoever shall lose his life for my sake and the gospel’s, the same shall save it. 36 For what shall it profit a man, if he shall gain the whole world, and lose his own soul? 37 Or what shall a man give in exchange for his soul? 38 Whosoever therefore shall be ashamed of me and of my words in this adulterous and sinful generation; of him also shall the Son of man be ashamed, when he cometh in the glory of his Father with the holy angels.
Joh 12:46 I am come a light into the world, that whosoever believeth on me should not abide in darkness. 47 And if any man hear my words, and believe not, I judge him not: for I came not to judge the world, but to save the world. 48 He that rejecteth me, and receiveth not my words, hath one that judgeth him: the word that I have spoken, the same shall judge him in the last day. 49 For I have not spoken of myself; but the Father which sent me, he gave me a commandment, what I should say, and what I should speak. 50 And I know that his commandment is life everlasting: whatsoever I speak therefore, even as the Father said unto me, so I speak.
Joh 14:23 Jesus answered and said unto him, If a man love me, he will keep my words: and my Father will love him, and we will come unto him, and make our abode with him. 24 He that loveth me not keepeth not my sayings: and the word which ye hear is not mine, but the Father’s which sent me.
Joh 15:1 ¶ I am the true vine, and my Father is the husbandman. 2 Every branch in me that beareth not fruit he taketh away: and every branch that beareth fruit, he purgeth it, that it may bring forth more fruit. 3 Now ye are clean through the word which I have spoken unto you. 4 Abide in me, and I in you. As the branch cannot bear fruit of itself, except it abide in the vine; no more can ye, except ye abide in me. 5 I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing. 6 If a man abide not in me, he is cast forth as a branch, and is withered; and men gather them, and cast them into the fire, and they are burned. 7 If ye abide in me, and my words abide in you, ye shall ask what ye will, and it shall be done unto you. 8 Herein is my Father glorified, that ye bear much fruit; so shall ye be my disciples. 9 ¶ As the Father hath loved me, so have I loved you: continue ye in my love. 10 If ye keep my commandments, ye shall abide in my love; even as I have kept my Father’s commandments, and abide in his love.
Can I ask you. Is Paul speaking in Rom 7:14-25 of his life prior to becoming a Christian, or of his life as a Christian?