Personally I don't understand how a person comes to believe that a born again Christian can reject Jesus Christ, in favor of serving Allah or the antichrist, can still be saved.
ME
The mistake works salvation proponents make is to first renounce what Jesus taught about faith and grace.
Then to pursue what is entirely a humanist ideology that works to convince others and purports to teach that human will saves or damns.
If we could work to save ourselves Jesus wouldn't have died on the cross. Salvation is the gift of God's grace.
This is where the Humanist school of neo-xtianity fails and because its followers don't understand. God knew who would follow his son before he created the world. He knew us and he called us by name. That's in the Old and the New Testaments.
Now, when God, contrary to Humanist teaching or thought, knows more than humans do and is more powerful in his will than we are in ours, says he knew who would come to Jesus , those sheep that would know Jesus' voice and follow him, before God created the world those sheep would later inhabit, that means exactly what God said. God KNEW US FIRST!
And being he's God he also foreknew those among us who would fall from the path of righteousness due to whatever. And yet, being God is all knowing about all things, he still wrote our names in the book that contains those names he knew and then called to his son. That book too was written before the foundation of this world.
God forgives! It is man that does not. But God does. And God knows that there will be that Christian that will lose their way from time to time. Because we're lesser beings than God. That doesn't mean God abandons us because we think we can leave him. God knew our future before we came to exist. Just because we leave God doesn't mean God leaves us.
God came to us with his free gift of eternal salvation because he gave his grace to the world. Then he retracts his grace because we turn obstinate and reject it? God knew his sheep in before the beginning. That means everything.
We don't work to stay saved. That's anti-christ doctine. That revokes everything Jesus died on the cross to guarantee in the new covenant God made with his people.
Now, don't get me wrong. Those who think they have to labor to stay saved should work it!
But for sure don't think to convince those who know the scriptures and the covenantal promise Jesus died for to follow you.
Oh yeah, this is Theology forum so scriptural support is needed.
17 Verses to support the truth of eternal salvation.
Now let those who teach a different way show those scriptures that say, salvation is not a free gift of God's grace. And secondly, that verse that says, God's gifts and calling are revocable.
If we're to share scriptures to support the Gospel, those who contend against it are beholding to follow the same rules.