Discrepancies in the Census: Biblical Analysis

Was it God or Satan who incited David to take the census?
How many troops were counted? 2 Sam. and 1 Chron. have different numbers.
The book of James says God doesn't tempt anyone, so how can that be reconciled with him inciting David?
Why are Israel and Judah talked about as different groups before the kingdom split into those groups?

This is just one question from a long interview I did for the moderators of the r/Bible subreddit. They asked their subreddit to send me a bunch of questions and I spent a lot of time preparing so that I would be able to offer the best answers I could. I'll be posting these answers as individual videos, so keep an eye out for the rest in the set. Here's a playlist where I will add them as they come out: 
https://www.youtube.com/playlist?list=PLZ3iRMLYFlHtc_kN13cgTRV1l3bl3wZiD

My website https://BibleThinker.org