sat before the LORD. Very different from sitting before one's self, as in 2Sa_7:1.
Who am I . . . ? Figure of speech Erotesis.App-6. Compare 2Sa_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: 2Sa_7:7, 2Sa_7:19 (twice), 2Sa_7:20, 2Sa_7:28, 2Sa_7:29, six times in this chapter.