Your next major error is this out-of-context quote from 1 Cor. This verse does NOT refer to the works of all mankind as you presume. Where does the Bible ever say that men will be saved by their works?
1 Corinthians 3:9-17
9 For we are God's fellow workers. You are God's field, God's building.
This entire passage is addressed to a specific group God's fellow workers. God's field, God's building." Those who build on the foundation of Christ. vs. 10, 11, 12
10 According to the grace of God given to me, like a skilled master
builder I laid a foundation, [Christ] and someone else is building upon it. Let each one take care how he builds upon it.
11 For no one can lay a foundation other than that which is laid, which is Jesus Christ.
12 Now if anyone builds on the foundation [of Christ] with gold, silver, precious stones, wood, hay, straw—
13 each one's work will become manifest, for the Day will disclose it, because it will be revealed by fire, and the fire will test what sort of work each one has done.
Not the ordinary, mundane works of all mankind but the works of Christian believers building on the foundation of Christ
14 If the work that anyone has built on the foundation survives, he will receive a reward.
Note NOT the mundane, ordinary works of sinners but the works of Christians building on the foundation of Christ. If the work survives "gold, silver, precious stones" vs. 12.
15 If anyone's work is burned up, he will suffer loss, though he himself will be saved, but only as through fire.
Man is NEVER saved by ordinary, mundane works. Man is NEVER saved by fire. It reads "as if through fire."
16 Do you not know that you are God's temple and that God's Spirit dwells in you?
17 If anyone destroys God's temple, God will destroy him. For God's temple is holy, and you are that temple.
Note vs. 15 does not say all sinful mankind will be saved, by fire, no matter what. This passage concludes with saying anyone who destroys God's temple will be destroyed NOT saved.