Why was it David won these two battles with the Philistians?

1. Why did Uzzah die? Cf. 1 Sam. 6:19; Num, 4:15; 1 Chr. 15:15.
   What was god teaching through this incident?
2. What was the real reason for Michal’s contempt for David, and what her pretended reason?
   Why was it David behaved as he did on this occasions?
   Can I learn anything from his exuberance ‘before the Lord’?