2 Samuel 7:20 Meaning

18Then went king David in, and sat before the LORD, and he said, Who am I, O Lord GOD? and what is my house, that thou hast brought me hitherto?

19And this was yet a small thing in thy sight, O Lord GOD; but thou hast spoken also of thy servant's house for a great while to come. And is this the manner of man, O Lord GOD?

20And what can David say more unto thee? for thou, Lord GOD, knowest thy servant.

21For thy word's sake, and according to thine own heart, hast thou done all these great things, to make thy servant know them.

22Wherefore thou art great, O LORD God: for there is none like thee, neither is there any God beside thee, according to all that we have heard with our ears.