Rejoicing in the Lord (and in Him Alone)

Thus David implies in Ps. 64.10. David calls for those who are God-followers to rejoice in the Lord. He does this because there is no higher nor more worthy being in which to rejoice. By rejoicing in God we are putting our satisfaction as high as it can possibly be. There is nothing inside or outside of the universe in which we can rejoice that will give us more satisfaction than in God alone. I'm happy to follow David's admonition here.