@Samuel_23, you say that 1 Corinthians 3:14-16 is the primary evidence for the Roman Catholic doctrine of Purgatory. Let’s look at that passage. What does it really say?
1Co 3:10 According to the grace of God given to me, like a skilled master builder I laid a foundation, and someone else is building upon it. Let each one take care how he builds upon it.
1Co 3:11 For no one can lay a foundation other than that which is laid, which is Jesus Christ.
1Co 3:12 Now if anyone builds on the foundation with gold, silver, precious stones, wood, hay, straw—
1Co 3:13 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.
1Co 3:14 If the work that anyone has built on the foundation survives, he will receive a reward.
1Co 3:15 If anyone’s work is burned up, he will suffer loss, though he himself will be saved, but only as through fire.
First, when is that work done and when is the “Day” Paul writes about in verse 13?
The work obviously is the work of ministry by Paul and others in this life, whereas the “Day” is the day of judgment when Jesus re-appears. That day will come with fire. What fire? Peter helps us out with the meaning of the fire:
2Pe 3:10 But the day of the Lord will come like a thief, and then the heavens will pass away with a roar, and the heavenly bodies will be burned up and dissolved, and the earth and the works that are done on it will be exposed.
2Pe 3:11 Since all these things are thus to be dissolved, what sort of people ought you to be in lives of holiness and godliness,
2Pe 3:12 waiting for and hastening the coming of the day of God, because of which the heavens will be set on fire and dissolved, and the heavenly bodies will melt as they burn!
2Pe 3:13 But according to his promise we are waiting for new heavens and a new earth in which righteousness dwells.
Therefore, when Jesus returns, he will burn off this old universe to prepare for the new universe as our home. All sins and their results will disappear in the “flames” of God’s glory, not a Purgatory for souls. As a result, the Roman Catholics have no leg to stand on but have added their own tradition to and read it into Scripture to produce their unbiblical doctrine.