If I am understanding here - and I am trying to the question is - what’s the difference if you believe in faith alone, or faith and works. Right?
Well, the basic stance of those who believe in faith alone nowadays (at least it seemed to me when I was one of those people) is that any works you do are “additional” so to speak, but not stictly necessary, because all is forgiven when you accept Christ; and you are on your way to heaven so long as you keep it that way. If you happen to find something to do that helps great - do it. God didn’t set out anything more for us t do than believe in Him, and be baptized…although exactly how that is to be accomplished is also up for debate.
However - Jesus said - “Pick up your cross and follow me, and anyone who does not take up his cross and follow me is not worthy of me” Matthew 10:38, 16:24 and many, mant other things along those same lines found on this thread… forums.catholic.com/showthread.php?t=147534
The gist of which is that we must DO the will of God, always. Not to “work our way into salvation” - because that is impossible, as we all agree. But because it is what God demands from us. The full understanding of His teachings, and subsequent revealed truths, Full compliance to those teachings, and an unerring focus upon Him while performing them. To “Be a light unto the world” and “the salt of the earth”, all of us - not just religious. Because we are saved by Grace through faith…in other words we have to do Gods will in Faith, for that he gives us Grace which sanctifies us and makes us holy - progressively.
We are Justified by Faith in Christ, but we recieve grace (also unearned) when we take that faith and go get baptized…baptism performed on an individual who presents himself for it in that faith then sanctifies him from all previous sins. He is then a “New Creature in Christ” you have to have the Faith true - but you also need the action that goes along wth it according to Gods will, and according to the structure he put in place for it. Otherwise it is basically useless - other than to steer you in the correct direction…which also requires that you follow the leading of the Holy Spirit who is trying to guide you.
Please also see this page - Grace, what it is and what it does:
Not that anyone who is ignorant of those things will be “left behind” (pun intended) but that those who reject those things might be. See John: 53-69
Hope this helps