Charles H. Spurgeon on Psalms 132:10

For thy servant David's sake. The frequency with which God is urged to hear and answer prayer for David's sake (1Ki 11:12-13 15:4 2Ki 8:19, etc.), is not to be explained by making David mean the promise to David, nor from the personal favour of which he was the object, but for his historical position as the great theocratic model, in whom it pleased God that the old economy should reach its culminating point, and who is always held up as the type and representative of the Messiah, so that all the intervening kings are mere connecting links, and their reigns mere repetitions and continuations of the reign of David, with more or less resemblance as they happened to be good or bad. Hence the frequency with which his name appears in the later Scriptures, compared with even the last of his successors, and the otherwise inexplicable transfer of that name to the Messiah himself. —Joseph Addison Alexander.