warning against neglect; and this is sustained by citing the melancholy fate of their rebellious ancestors, whose provoking insolence is described by quoting the language of God’s complaint (Num 14:11) of their conduct at Meribah and Massah, names given (Exo 17:7) to commemorate their strife and contention with Him (Psa 78:18, Psa 78:41).