It it true what the Bible says?
( anything apart from faith is sin?)
All your fluff aside.
Is it true?
Yes, it is true.
:-)
The thing is, sin isn't about conforming to some list of behaviors. This is where people go wrong thinking they are to keep the Law. Some even derive a personal form of "Law" collating commands and admonitions into some sort of NT "Law", thinking that they are to monitor their actions so they can avoid breaking these commands.
The reality is that until someone is regenerated, all they have is corrupt flesh and mind from which to think and act. Because people are corrupt, all they do will be corrupt. Even things that seem to be good works will turn out to be corrupted, either performed for show, or because they think they have to, or some such.
True righteousness comes from the one who is regenerated in the Spirit, and who is allowing the Spirit to empower our lives.
There is another simple statement concerning sin much like the one you are asking about above. The good that you know to do, if you don't do it, this is sin.
And this simple statement points us in the true direction to find the source of sin, that being the heart of man. You KNOW you should do this, you KNOW you shouldn't do that, and when you go against what you know, that is wrong.
This is the meaning of "all that is not of faith is sin". This is true because "the just shall live by faith", so not living by faith is sin. It goes way beyond the OT commands, even the Sermon on the Mount doesn't go this far.
NT obedience to the faith means that we live in the same love God has for man, this is the love we are to have for others. And rather than checking the boxes, (tithed - yes, lying - no), the real question is,
Do you in fact, from your heart, love others? Are you in fact more concerned over their well being then your own? This is the real measure.
Will you sacrifice of yourself to meet another's need? This is love, and love is what moves us to do righteousness.
Ephesians 4 tells us to stop lying to each other, and instead tell the truth, since we are all members one of another. Simply stated, we are family, so act like it. If we are actually brothers, then don't be misleading, don't act like something is true if it's not.
Rather than trying to score points off of someone, rather than putting someone down so you can feel better about yourself, forget about yourself, and serve others because you love them more than you love yourself.
And if you love yourself more than you love others, go to the LORD. If you truly desire that He give you this love, seek it from Him, and you will find it.
We are to be conformed to the image of Jesus, Who gave Himself fully and completely for others, for us! Let us do the same, and leave behind the petty selfishness and bickering. Let us be known as a people who love each other. Let us be known for our sacrificial giving. Let us be known for our ability to rise above the rest.
Much love!