Being a follower of Jesus I find it puzzling that another follower would question if a person could loose their salvation.
Is God stupid or not sure who should be saved, so He'll just save anyone then, if it doesn't work out He'll un -save them.
If you use all of scripture instead of a few selected verses to try and prove your point even though your point as well as the scriptures you use are out of the context and setting of the scripture. If they don't harmonize with all scripture perhaps you need a tune up.
All that the Father giveth me shall come to me; and him that cometh to me I will in no wise cast out. 38For I came down from heaven, not to do mine own will, but the will of him that sent me. 39And this is the Fathers will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day. 40And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have everlasting life: and I will raise him up at the last day. (John 6:37)
No man can come to me, except the Father which hath sent me draw him: and I will raise him up at the last day. 45It is written in the prophets, And they shall be all taught of God. Every man therefore that hath heard, and hath learned of the Father, cometh unto me. (John6:44)
My sheep hear my voice, and I know them, and they follow me: 28And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand. 29My Father, which gave them me, is greater than all; and no man is able to pluck them out of my Fathers hand. 30I and my Father are one. (John10:47)
In whom also we have obtained an inheritance, being predestinated according to the purpose of him who worketh all things after the counsel of his own will: 12That we should be to the praise of his glory, who first trusted in Christ. 13In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise, 14Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory. (Eph1:11)
And you hath he quickened, who were dead in trespasses and sins; 2Wherein in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience: 3Among whom also we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.
4But God, who is rich in mercy, for his great love wherewith he loved us, 5Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved) (Eph 2:1)
Do you fully grasp what being born of the Spirit means/does?