Doctrine of Eternal Security, Unsafe

 1^st John 5:16-If any man see his brother sin a sin which is not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say he shall pray for it. This scripture proves without doubt that a Christian can sin a sin that will not be forgiven; this is contrary to the doctrine of eternal security. Heb. 2:3-How shall we escape, If WE neglect so great a salvation? This inspired writer includes himself with this people he is writing in stating there is no escape if we neglect our salvation. He later told the same people that we are made partakers of Christ, IF we hold the beginning of our confidence steadfast unto the end (Heb. 5:14). Exo. 52:31-33-And Moses returned unto the Lord, and said, Oh, this people have sinned a great sin, and have made them gods of gold. Yet now, if thou wilt forgive their sin; and if not, blot me, I pray thee, out of thy book which thou hast written. And the Lord said unto Moses, Whosoever hath sinned against me, him will I blot out of my book. This passage proves to us as to how God will act in the case of sin; this is rather hard on the doctrine of once saved, always saved. 2nd Peter 2:4-For if God spared not the angels that sinned, but cast them down to hell, and delivered them unto chains of darkness, to be reserved unto judgment. If the doctrine of eternal security be true then we are by far safer than the angels in heaven because they were cast into darkness because they sinned. Mat. 24:13-But he that shall endure unto the end, the same shall be saved. If only they who endure to the end will be saved, what will be the end of those who fail to endure and obey the gospel of God? Gal. 5:4-Christ is become of no effect unto you, whosoever of you are justified by the law; ye are fallen from grace. Can a person be saved if they have fallen from grace? Paul warns this people concerning the works of the law, and by so doing they are fallen from grace. Rom. 8:13-For if ye live after the flesh, ye shall die: but if you through the Spirit do mortify the deeds of the body, ye shall live. This doesn't sound in favor of eternal security; do you think so? Ezek. 3:20-Again, when a righteous man doth turn from his righteousness, and commit iniquity, and I lay a stumbling block before him, he shall die: because thou hast not given him warning, he shall die in his sin, and his righteousness which he hath done shall not be remembered; but his blood will I require at thine hand. Please read and study this passage and see if it teaches that if a man is ever once saved he will not be lost no matter how he lives before God. John 15:6-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. This is ample proof that Jesus will cast you off if we sin and refuse to repent of the evil; it is a dangerous thing to trifle with our soul. 1^st Cor. 9:27-But I keep under my body, and bring it into subjection: lest by any means, when I have preached to others, I myself should be a castaway. This scripture seems to prove a possibility of getting away from God and becoming a castaway; read it close. 1^st Chron. 28:9-If thou seek Him, He will be found of thee; but if thou forsake Him, He will cast thee off forever. Brother, this is rather plain and strong language; if we forsake Him, He will cast us off forever. Notice it is US that forsakes Him, and then He will do the rest.