When a person teaches that Faith is not what God accepts to save you and keep you saved, then this teaching is denying that The Cross of Christ is all that God provided and accepts to accept a person who BELIEVES.
The problem with this 'acceptance' gospel of Christian religion, is that God does not have to 'accept' any man's faith, nor does He.
The Father only justified them having the faith of His dead Son Jesus Christ.
That's why we can believe we are saved and justified by our own faith alone in this life. But it ends in the grave. Only the faith of Jesus can resurrect us unto life with Him forever.
It's the faith of Jesus that is the free gift by hearing His word alone. But hearing only is not the justification of God that comes by doing His word and obeying His faith.
Salvation and justification are obtained in this life by hearing and doing the word, not by hearing alone. And resurrection unto life is the reward, that is only for them obeying Jesus unto the end of this life.
The teaching that "works" is a part of Salvation, is to teach that Jesus's Cross is not enough and a persons behavior. (their works) is a 2nd part of God's Redemption.
That's your teaching, not the Bible's. We are commanded by 2 Peter to be diligent to add works to our faith, in order to ensure our salvation beyond the grave by not falling into sinning. It's what Jude calls earnestly contending for the faith of Jesus. Paul calls it the good fight to fight and race of life to run. Which must be done lawfully, and not just by our own faith in our own personal rules and self-justifications.
Paul said this Cross Denying gospel of works is 'cursed" and the person as well who teaches it.
The cross denying gospel is the faith alone without works gospel, that rejects the need to crucify our old past life of sinning. It disanulls the necessity of crucifying our old past life of sinning, that we may in deed and in truth walk as He walked and be worthy of Him.
And besides, it's pretty ludicrous for those teaching such things as being eternally saved by our own faith alone, to also then want to try and 'warn' any believer about anything having to do with their soul.
I mean, what would be the point with warnings about our soul? This simply shows that your warnings are much more about you personally and the gospel you preach. You're only making dire warnings against others that dare to disagree with you. Well, I dare. I'll not be 'warned' into silence against comparing any Christian faith, doctrine, and gospel that does not agree with the Bible.
I'll show how in detail they are not the Bible, and I don't care anything for warnings against it. Now, if someone wants to actually show how my comparisons are false, then that's good and fine by me. Because unlike yourself, I don't just call someone's teaching cursed, just because it doesn't agree with mine. I really don't call any Christian gospel cursed. I just show when it differs from any words of the Bible.
As with this verse. Why would you warn anyone about running not well, since you preach it doesn't matter how anyone runs once someone is eternally saved by their own faith alone. Right?
Some teach we don't even have to run and be in the race at all. And if you're not willing to go that far, it's only because you don't really believe the plain words of your own gospel.
Eat, drink, and be merry, for tomorrow we die and go to heaven. It's the Christian one-upmanship on old pagan Epicureanism.