For thy word's sake; that thou mightest fulfil thy promises made to me by Samuel and Nathan, and thereby demonstrate thy faithfulness. According to thine own heart, i. e. of thine own mere liberality and good pleasure, without any desert of mine. So far was David, though now a very gracious man, from thinking his actions meritorious. To make thy servant know them, i.e. that thy gracious and wonderful purposes of mercy towards me, which lay hid in thine own heart, might be manifested unto me and others by thy most kind words and actions. So it agrees with 1 Chronicles 17:19.
Related Commentaries of 2 Samuel 7:21
2 Samuel 7:21
21 For thy word's sake, and according to thine own heart, hast thou done all these great things, to make thy servant know them.