Once saved is NOT always saved:
KJB1611 Ephesians 1:13-14
13 In whom ye also trusted, after that ye heard the word of trueth, the Gospel of your saluation: in whom also after that yee beleeued, yee were sealed with that holy Spirit of promise,
14 Which is the earnest of our inheritance, vntill the redemption of the purchased possession, vnto the praise of his glorie.
1Corinthinans 15: 3-4
3 For I deliuered vnto you first of all, that which I also receiued, how that Christ died for our sinnes according to the Scriptures:
4 And that he was buried, and that he rose againe the third day according to the Scriptures.
KJB1611 Matthew 7: What Jesus said:
12 Therefore all things whatsoeuer ye would that men should doe to you, doe ye euen so to them: for this is the Law and the Prophets.
13 ¶ Enter ye in at the strait gate, for wide is the gate, and broad is the way that leadeth to destruction, and many there be which goe in thereat:
14 Because strait is the gate, and narrow is the way which leadeth vnto life, and few there be that finde it.
15 ¶ Beware of false prophets which come to you in sheepes clothing, but inwardly they are rauening wolues.
16 Yee shall knowe them by their fruits: Doe men gather grapes of thornes, or figges of thistles?
17 Euen so, euery good tree bringeth forth good fruit: but a corrupt tree bringeth forth euill fruit.
18 A good tree cannot bring forth euil fruit, neither can a corrupt tree bring forth good fruit.
19 Euery tree that bringeth not forth good fruit, is hewen downe, and cast into the fire.
20 Wherefore by their fruits ye shall know them.
21 ¶ Not euery one that saith vnto me, Lord, Lord, shall enter into the kingdome of heauen: but he that doth the will of my father which is in heauen.
22 Many will say to me in that day, Lord, Lord, haue we not prophecied in thy name? and in thy name haue cast out deuils? and in thy name done many wonderfull works?
23 And then wil I professe vnto them, I neuer knew you: Depart from me, ye that worke iniquity.
24 ¶ Therefore, whosoeuer heareth these sayings of mine, and doeth them, I wil liken him vnto a wise man, which built his house vpon a rocke: