What does 2 Chronicles 6:16 mean?

'Now, Lord, God of Israel, keep the rest of your promise to my father David, your servant, when you said, “You’ll always have a descendant sitting on Israel’s throne, as long as your children stay faithful to me, living by my ways as you have.”' 2 Chronicles 6:16 - Modern Text Bible

(Solomon asks God to continue fulfilling the promise to David’s family, but he recognizes it depends on their faithfulness.)