John Trapp on Psalms 77:7

Verſ. 7. Will the Lord cast off for ever?] No, not at all, though the extremity and length of the Pſalmiſts grief put him upon theſe ſad Interrogatories, with ſome diffidence, touching the Nature, and Promiſe of God.

Will he be favourable no more?] So the Devil, and carnal reaſon would have perſwaded him; and did haply for a time. But this very queſtioning the matter ſheweth, he yet lay languiſhing at Hopes Hoſpital, waiting for comfort. The Soul may ſucceſſively doubt, and yet beleeve.