John Trapp on Isaiah 66:14

Ver. 14. And when ye ſee this, your heart ſhall rejoyce] Videbitis, gaudebitis: you ſhall ſee that I do not give you good words only, but that I am in good earneſt, ye ſhall know it within your ſelves, in the workings of your own hearts, as Heb. 10.34.

And your bones ſhall flouriſh like an herb] i. e. They ſhall be filled again with moiſture and marrow. See Ezek. 37.10, 11. you ſhall be fair-liking and reflouriſh.

And the hand of the Lord] i. e. His infinite power, tantorum beneficiorum in piis operatrix, the efficient cauſe of all theſe comforts.