And now, O Lord GOD, you are God, and your words are true, and you have promised this good thing to your servant.
We have here the solemn address David made to God, in answer to the gracious message God had sent him. We are not told what he said to Nathan; no doubt he received him very kindly and respectfully as God's messenger. But his answer to God he took himself, and did not send by Nathan.
Commenting on 2 Samuel 7:18-29
And now, O Lord God, thou art that God,.... Who is the Lord of hosts, and the God of Israel, that has promised and is able to perform, and is faithful to his promise: and thy words be true; are truly, punctually, and faithfully performed, never fail: and thou hast promised this goodness unto thy servant; concerning building and establishing his house.
2Sa 7:28-29 David then briefly sums up the two parts of his prayer of thanksgiving in the two clauses commencing with ועתּה, “and now.” - In 2Sa 7:28 he sums up the contents of 2Sa 7:18-24 by celebrating the greatness of the Lord and His promise; and in 2Sa 7:29 the substance of the prayer in 2Sa 7:25-27.
Commenting on 2 Samuel 7:28-29