I just love the imagery in these verses. Even though David is being pursued by Absalom to be killed and overthrown from his throne, he can rest in the Lord. And here I think I have troubles sometimes!! If David can rest in the power of the Lord at a time like that, I can surely rest in God with my troubles.
We serve the same, unchanging, unwavering God of David, let's be encouraged to praise and trust Him just as David did!