What the Bible really says about
  "Once saved always saved"
   "Once a son always a son"

John 1:12 But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:
Romans 8:14 For as many as are led by the Spirit of God, they are the sons of God.
Genesis 6:4 There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men, and they bare children to them, the same became mighty men which were of old, men of renown.
Angels here were called the sons of God. These had sex with women and became outcast.  All the angels were at one time called the sons of God.  Satan and 1/3 got cast out of heaved due to rebellion.
Job 1:6 Now there was a day when the sons of God came to present themselves before the Lord, and Satan came also among them.
Once again we see the angels called the sons of God.  Satan and his angles were sons of God.  They were in heaven walking with God and Satan was even the leader of the praise and worship team.  They rebelled against God and got cast out of Heaven.  How do think we can rebel against God and still make it in.

James 4:4 Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the enemy of God.

5 Do ye think that the scripture saith in vain, The spirit that dwelleth in us lusteth to envy?

6 But he giveth more grace. Wherefore he saith, God resisteth the proud, but giveth grace unto the humble.

7 Submit yourselves therefore to God. Resist the devil, and he will flee from you.

8 Draw nigh to God, and he will draw nigh to you. Cleanse your hands, ye sinners; and purify your hearts, ye double minded.

1 Corinthians 6:9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
11 And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.
Romans 6:1 What shall we say then? Shall we continue in sin, that grace may abound?
2 God forbid. How shall we, that are dead to sin, live any longer therein?
13 Neither yield ye your members as instruments of unrighteousness unto sin: but yield yourselves unto God, as those that are alive from the dead, and your members as instruments of righteousness unto God.
14 For sin shall not have dominion over you: for ye are not under the law, but under grace.
15 What then? shall we sin, because we are not under the law, but under grace? God forbid.
16 Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?
Living under grace does not give you the licenses to sin, but the ability through God's Holy Spirit to say no to sin, and yes to the voice of God.  We can't continue to live a life of willful sinning.
Jude 1:14 And Enoch also, the seventh from Adam, (Noah's great grandfather) prophesied of these, saying, Behold, the Lord cometh with ten thousands of his saints,
15 To execute judgment upon all, and to convince all that are ungodly among them of all their ungodly deeds which they have ungodly committed, and of all their hard speeches which ungodly sinners have spoken against him.
16 These are murmurers, complainers, walking after their own lusts; and their mouth speaketh great swelling words, having men's persons in admiration because of advantage.

James 1:21 Wherefore lay apart all filthiness and superfluity of naughtiness, 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
Matthew 24:13 But he that shall endure unto the end, the same shall be saved.
Church we must endure until the end.  We can't do good for a while and then turn back to the devil.
                                    We must endure, and continue until the end.
John 8:
31 Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed;
32 And ye shall know the truth, and the truth shall make you free.
You can never be plucked out of God's hand, but like Satan, Adam, Saul, the prodigal son, Judas Iscariot and many others in the Bible you can step out of God's mighty hand and leave.  God did not force Lucifer nor Adam to serve Him.  He will not force you to serve Him either.  It is all about choice.  You are either serving God or Satan. 

1 John 3:9 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.

Revelation 3:5 He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels.
Revelation 22:19 And if any man shall take away from the words of the book of this prophecy, God shall take away his part out of the book of life, and out of the holy city, and from the things which are written in this book.
John was speaking to the church not to the world.  How can your name be blotted out of the book if it was never there in the first place?

Have you accepted Jesus as LORD and savior of your life?

1 Corinthians 6:9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,

10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.

Be not deceived it says.  The teaching of one saved always saved is deceiving.

 

1 Thessalonians 3:5 For this cause, when I could no longer forbear, I sent to know your faith, lest by some means the tempter have tempted you, and our labour be in vain.

If you could not be tempted by the tempter enough to lose your salvation then your labour could not be in vain.

1 Timothy 4:1 the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;

2 Speaking lies in hypocrisy; having their conscience seared with a hot iron;

Here the Spirit speaks and that some shall depart from the faith and heed to seducing spirits and doctrines of devils.

                               Once saved always saved is a false doctrine of the devil.