Then. It is grace that really humbles.
sat before the LORD. Very different from sitting before one's self, as in 2 Samuel 7:1.
Who am.... ? Figure of speech Erotesis. App-6. Compare 2 Samuel 7:1. When David sat in his own house he sat before him-self. See Structure, p. 416, "Q" and "Q".
O Lord GOD. O Adonai Jehovah. Adonai because
(1) David is the servant and He the master;
(2) because this title has to do with lordship in the earth. App-4. Compare verses: 2 Samuel 7:7; 2 Samuel 7:19 (twice), 2 Samuel 7:20 2 Samuel 7:28, 2 Samuel 7:29, six times in this chapter.