No one is able to disown Jesus. That would make that person larger and stronger than God. Jesus closed the door on that argument in John 19:28-29.
The Bible describes the relationship between one who has believed and God as Father and child. Just as a human child or parent CANNOT undo the birth so as to no longer be the parent or child, so also God does not undo the birth. Otherwise, we would have clear verses to that point. But we don't.
*[[Rom 5:17]] kjva* For if by one man's offence death reigned by one; much
more they which receive abundance of grace and of the gift of righteousness shall reign in life by one, Jesus Christ.)
Rom 8:28 kjva And we know that all things work together for good
to them that love God, to them who are the called according to his purpose.
Joh 5:22-24 kjva 22 For the Father judgeth no man, but hath committed all judgment unto the Son: 23
That all men should honour the Son, even as they honour the Father. He that honoureth not the Son honoureth not the Father which hath sent him. 24 Verily, verily, I say unto you,
He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
Rom 5:18 kjva Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one
the free gift came upon all men unto justification of life.
The only source of truth is scripture. Jesus forordainded before the foundation of the world (for known before hand) was all things made for, and because of the son. There is nothing made not under him, and he died for all effected by one man's sin, that the father saved all men through his son that many who believed should be justified by free grace through faith in the word and Faith created by the word preached.
Predestination is a bad doctrine and I wish it was not added to OSAS. For by grace came to all, not by our own works. The grace is there, free with nothing under man's own efforts that can change it. Adams sin effected every single man, and grace to everyone that will believe.
Who can believe and be saved? As it is written even Israel who have promise through election of God's own oath can only be grafted in again if they believe. How much more those who are not elected in through the oath?
Rom 11:18-24 kjva 18 Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee. 19 Thou wilt say then, The branches were broken off, that I might be graffed in. 20 Well;
because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear: 21 For if God spared not the natural branches, take heed lest he also spare not thee. 22 Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness,
if thou continue in his goodness: otherwise thou also shalt be cut off. 23 And they also,
if they abide not still in unbelief, shall be graffed in: for God is able to graff them in again. 24 For if thou wert cut out of the olive tree which is wild by nature, and wert graffed contrary to nature into a good olive tree: how much more shall these, which be the natural branches, be graffed into their own olive tree?
The promise is to all men. God has not made one person without a good plan for them. Many are called, few are chosen.