I take it you are questioning my statement "I've known people who were saved and filled with the Spirit and showed spiritual growth without being baptized."
People are saved by grace through faith (alone), as stated in Eph. 2:8. I'm fairly sure you believe in the salvation results in faith plus works formula, and this is why you question what I said.
I believe the scripture teaches that we are saved through faith alone, and the apostle Paul makes that pretty clear. Now, if you want to split hairs over what faith is, I'm willing to go toe-to-toe with you.
But in advance, I can tell you that many people, including leaders in the RCC, do not understand faith correctly, and is the reason why there are certain statements against the faith alone idea in the articles of Trent.
Also, your application of Matt. 24:13 is mishandled IMO. You appear to be using it as a justification for the idea that "enduring to the end" (which is a work) causes salvation, but that is not what the verse says. That verse is identifying those whom God saves, and is not a cause-effect statement. I suspect that you are assuming it is cause-effect, and I'm saying that assumption is incorrect. "Those who..." is an identifier of the ones to be saved.
Eph 2 refers to redemption not salvation
Redemption, Justification, Sanctification, and Salvation!
Redemption: 100 percent the work of God, thru the life, death, resurrection, and ascension of Jesus Christ! All mankind are redeemed in Christ! Eph 2
Galatians 2:16 3:13
Christ hath redeemed us from the curse of the law...
Justification: our acceptance of redemption thru faith and baptism! Become a disciple and member of Christ and His Church! Jn 3:5 acts 2:38 Mk 16:16 He who believes and is baptized shall be saved. 1 Corinthians 12:13 For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit. Galatians 3:27
For as many of you as have been baptized into Christ have put on Christ.
Sanctification: the life of grace in the holy sacrifice of the mass and sacraments, prayer, virture, and good works, the just living by faith, and faith working thru love! Phil 1:29 called to suffer with Christ.
All done in Christ thru His grace! Jn 15:5 I am the vine, ye are the branches: He that abideth in me, and I in him, the same bringeth forth much fruit: for without me ye can do nothing.
Salvation: a christian in the state if grace at the moment of death we enter into the salvation of the Lord! Mt 24:44-47 faithful servant! Jn 15:1-5 abide in me. Mt 24:13 But he that shall endure unto the end, the same shall be saved.
Heb 4:14 For we are made partakers of Christ, if we hold the beginning of our confidence stedfast unto the end;
Rom 13:11 ...for now is our salvation nearer than when we believed.
Then Once saved always saved!
1 Pet 3:20
Which sometime were disobedient, when once the longsuffering of God waited in the days of Noah, while the ark was a preparing, wherein few, that is, eight souls were saved by water.
21 The like figure whereunto even baptism doth also now save us!
(Ark of Noah a type of the church, member of Christ and his church and salvation by baptism!)
(Outside the ark all died and outside the church there is no salvation!