John Trapp on Psalms 16:9

Verſ. 9. Therefore my heart is glad, &c.] That is, I am all over in very good plight, as well as heart can wiſh, or need require; I do over-abound exceedingly with joy; God forgive mee mine unthankfullneſſe and unworthineſſe of ſo great glory, (as that Martyr ſaid) In all the dayes of my life I was never ſo merry, as now I am in this dark dungeon, &c. Wicked men rejoyce in appearance, and not in heart,Mr. Philpot. 2 Cor. 5.12. their joy is but skin-deep, their mirth frothy and flaſhy, ſuch as wetteth the mouth, but warmeth not the heart. But David is totus totus, quantus quantus exultabundus, his heart, glory, fleſh, (anſwerable, as ſome think to that of the Apoſtle, 1 Theſ. 5.23. Spirit, Soul, and Body) were all over-joyed.

My fleſh alſo ſhall reſt (or confidently dwell) in hope] Namely in this World, as in a wayfaring lodging;Diod. then, in the grave as a place of ſafeguard and repoſe; and at laſt, in heaven, as in its true and eternall manſion.