A Study on Faith I: What is Faith?

Heb 11:1
1. Now faith is the substance of things hoped for, the evidence of things not seen.
KJV

So, how would I define faith? As Paul did in the above quote from Hebrews? I’ve heard this definition a lot. As for me, though, I can see what he was getting at, but something I can’t seem to get my hands around. “… the evidence of things not seen.” But for sure he’s saying that it’s something you fully believe though you can’t see it. Something like that anyway.

Rom 4:18-19
18 Who (Abraham is being spoken of here) against hope believed in hope, that he might become the father of many nations; according to that which was spoken, So shall thy seed be.
KJV

So, according to Paul, Abraham believed in hope when hope seemed impossible. Believed hope. I’ve always liked that. Whatever, it’s belief. Faith is belief, unwavering belief, in something. In what? I believe today is Tuesday. Is that faith? Trivially, yes I guess. The calendar says there was a quarter moon yesterday. Do I have faith in the calendar? I don’t have to. Last evening I saw the quarter moon.

But it’s meaningless to spend time on trivial things in a study of faith. I’m interested in faith in God, faith in Christ, faith in the Bible.