Who am I, O Lord God, and what is my house that you have brought me thus far?Here is a little back story -
Moreover, I declare to you that the Lord will build a house for you.
Who am I , O Lord God and what is my house that You have brought me thus far?Isn't that how we should respond each and every day in light of what the Lord has done "thus far", and what He has promised to do for us in the future? David will say later on,
What more can David say to you for honoring you servant? For you know you servant.David is amazed at the grace of God, amazed at His mercy, amazed at His goodness. Even more so in light of the person David know himself to be.
And now, O Lord, let the word that You have spoken concerning your servant and concerning his house be established forever and do as you have spoken.Knock yourself out Lord, You want to bless me, bless away, don't hold anything back. And, Lord, the thing you promised to do, do that for me. David was claiming the promise and holding God to His word.