we can see from the verses you quoted in Acts 10:34-35 that faith MUST include working God's righteousness in order to be accepted with God. Hence a faith alone, that is, a faith apart from works is dead and not accepted with God. There is not a single example in the NT gospel where God randomly, UNconditionally accepted a person who was continually living in UNrighteousness, in defiance in doing God's will.
There are many reasons why you're wrong. God has promised to accept the smallest of faith as pleasing Him. Faith grows but it is the smallest of faith that pleases God. You nor I am judges of any man. Not one single person falls under our judgement to either damnation nor acceptance to God.
For example,
1. How can you work if you're crippled? How can you work of you're blind deaf and can't speak? Are there different rules for some?
2. Faith doesn't require anything but acceptance of the work of another.
3. Requiring "works" to establish the validity of faith is judgment of another.
I could go on and on but lets start there......
Again. I believe mankind can abandon faith in Jesus Christ. However, it has nothing to do with the absence or prevalence of sin.
Notice the words of Paul.....
Gal 4:19 My little children, of whom I travail in birth again until Christ be formed in you,
Gal 4:20 I desire to be present with you now, and to change my voice; for I stand in doubt of you.
Many express faith but have no idea what that faith means. Faith doesn't require absolute knowledge. These children are often rebellious and incapable of pleasing God. Much like when we are children and our father and mother MUST compensate for your inabilities (wiping the feces, feeding us, pampering us when we cry, showing patience and longsuffering toward our own children) until they grow up to able to take care of themselves.
Many bad things happen during this time. Children even die because of neglect. This world is full of innocent people that are victims of circumstances that God allows to take place in our lives.
I've noticed that people often change their position on salvation as they age. The older they get and the more feeble they get they tend to see that they're nothing without God.
Now, OSAS and "P" are overstated but so are those who believe they understand every aspect of when God does and doesn't cast away His own.
I remind you, if anyone man FALLS.... it our job to be kind and tenderhearted.
Gal 6:1 Brothers and sisters, if a person is discovered in some sin, you who are spiritual restore such a person in a spirit of gentleness. Pay close attention to yourselves, so that you are not tempted too.
Gal 6:2 Carry one another’s burdens, and in this way you will fulfill the law of Christ.
Gal 6:3 For if anyone thinks he is something when he is nothing, he deceives himself.
Gal 6:4 Let each one examine his own work. Then he can take pride in himself and not compare himself with someone else.
Gal 6:5 For each one will carry his own load.
There is nothing to glory about in the fall of another brother or sister of Adam.