'Servant's' in the Bible

And this hath been a small thing in thy sight, O God; and thou hast spoken of thy servant's house for a great while to come, and hast regarded me according to the rank of a man of high degree, Jehovah Elohim.

Jehovah, for thy servant's sake, and according to thine own heart, hast thou done all this greatness, to make known all these great things.