answer:“Is really, really knowing who you are just knowing your…?” The short answer is no (in my opinion). You really know someone when you can understand their world view, the ways in which they think and why, what their passions are, and much more. Basic facts can hint at these things, but don’t provide a full picture. I’m not sure what you mean about knowing you are in Christ, and I wouldn’t know how to answer it if I did, so I’ll leave that part to someone else. Hope I helped at all :)