The proof that the Bible writers contradict themselves on the matter of salvation is given below.
Mark
Luke
Paul
Believe in Jesus and Be Baptized
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"Whoever believes and is baptized will be saved, but whoever does not believe will condemned."
(Mark 16:16)
Obey Commandments and Give All Money to the Poor
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The man asked him, "What must I do to inherit eternal life?"
You know the commandments: Do not commit adultery, do not murder, do not steal, do not give false testimony, honor your father and mother…Sell everything you have and give to the poor, and you will have treasure in heaven."
(Luke 18:18-22)
Nothing you do will change your fate. God deliberately made men who would not be saved, no matter what they did
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He chose us …before the creation of the world to be holy and blameless in his sight…
he predestined us
(Ephesians 1:4-6)
"I will have mercy on whom I have mercy, and I will have compassion on whom I have compassion."
It does not, therefore, depend on man's desire or effort, but on God's mercy.
For the Scripture says to Pharaoh: "I raised you up for this very purpose, that I might display my power in you and that my name might be proclaimed in all the earth." Therefore God has mercy on whom he wants to have mercy, and he hardens whom he wants to harden.
One of you will say to me: "Then why does God still blame us? For who resists his will?" But who are you, O man, to talk back to God? "Shall what is formed say to him who formed it, 'Why did you make me like this?' " Does not the potter have the right to make out of the same lump of clay some pottery for noble purposes and some for common use?
(Romans 9:13-21)