Let's start from the top down . . .
A person can be born again, regenerated - then LOSE his secure position. The Bible warns us over and over that this can happen
(Matt. 7:19-23, Matt. 10:22, Matt. 24:13, Matt. 25:31–46, John 15:1-6, Rom. 11:22, 1 Cor. 9:27, 1 Cor. 4:4, 1 Tim. 4:1, Heb. 3:6, Heb. 3:12-14, Heb 6:4-6, Heb. 10:26-27, 2 Pet. 3:17, 1 John 2:24, 1 John 5:13, Rev. 3:5, Rev. 22:19).
Unfortunately, YOU seem to have fallen for the false Protestant invention of "OSAS" - Once Saved Always Saved.
We are warned in Scripture that ravenous wolves will arise from our own numbers - and to beware of them (Matt. 7:15, Acts 20:29).
As I explained to you before - Judas was one of those to whom Jesus gave the Authority to excommunicate in Matt. 18:15-18.
NOT sure why you need this to be explained again.
As to 1 Cor. 6:11 - I'm not sure why you posted this as some sort of "proof text" for Sola Fide. It doesn't support this false doctrine at ALL.
As to John 3:24 & Eph. 1:13, those are wonderful verses - for those who understand them.
You keep cherry-picking verses here and there without taking ALL of the verses in their proper CONTEXT. One verse of Scripture cannot refute another or it is ALL a lie. When you have verses that say we are saved by our "belief" - what is that really saying??
Let's see what the Bible says about "Believing" in Christ:
"Believing" in Christ means . . .
- Being baptized (Matt. 28:19-20, John 3:5, Rom. 2:29, Rom. 6:1-11, Col. 2:12-17, 1 Peter 3:21)
- Picking up our cross daily to follow him (Matt. 16:24, Luke 9:23)
- Works of mercy and charity (Matt. 19:21, 25:31–46, Luke 18:22)
- Obeying his commandments (John 14:15, 15:10)
- Doing the will of the Father (Matt. 7:21, James 1:22)
- Suffering with Christ (Matt. 10:38, 16:24, Mark 8:34, John 12:24, Rom. 8:17, 2 Cor. 1:5-7, Eph. 3:13, Phil. 1:29, 2 Tim. 1:8, 1 Peter 2:19-21, 4:1-2).
As I showed you earlier - faith is ACTION - not just mental assent because is is motivated by love (1 Cor. 13:1-3). Even the DEMONS believe in Christ (James 2:19) - but they don't have a faith of action because they don't have love.
Finally - Catholics agree that salvation is not of works that any man should boast (Eph. 2:9). Not of OUR works, at least.
HOWEVER - this verse is talking about works of the LAW (Mosaic Law). For Christians, GOD prepared our works for us in advance (Eph. 2:10). They are GIFTS from HIM for us to do.
They are for HIS glory - not ours . . .