You don't know a lot about Christianity or you wouldn't get it all twisted.
We confess and forsake our sin when we come to Christ through the grace of God's free unchangeable gift of faith and Salvation.
If we had to work to stay saved there would be no peace in Christ. Jesus did the work on the cross.
God's grace calls us to faith and Salvation. And God knows everything from beginning to end. And Jesus said no one who comes to him will be lost. When God knows us from beginning to end and still calls us to his grace, God knows what's going to happen between then and the day we die.
If we lose faith that's not going to surprise all knowing God. He died to save us. He's not going to give up on us because we make mistakes.
We are sealed unto the end of time when we're in the faith. Everything you and others who are opposed to the Gospel, and that is what you are when you deny its message, are failures before God's eyes.
Because you work to lead people to doubt their Salvation. And as you do that you impart the message God lied, and Jesus died for nothing. I would feel sorry for you if you weren't so committed to going to Hell and taking others with you.
The blessed good news that counters that? You shall never ever be accompanied by a single Christian there.
Happy trails.