Now therefore, may it please You to bless the house of Your servant, that it may continue forever before You. For You, O Lord GOD, have spoken, and with Your blessing the house of Your servant will be blessed forever.”
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
Now therefore let it please thee to bless the house of thy servant,.... Not according to the merits of him or his family, but according to the sovereign will and pleasure of God; the Targum is, begin and bless; let the promised blessings begin to descend, that there may be some appearance of the performance of the promise, which may give encouragement that the whole...
Therefore now let it please thee to bless the house of thy servant, that it may continue for ever before thee: for thou, O Lord GOD, hast spoken [it]: and with thy blessing let the house of thy servant be blessed for ever. (o) Therefore I firmly believe it will come to pass.