John Trapp on Psalms 56:13

Verſ. 13. For thou haſt delivered my ſoul from death] Which was the very thing I begged of thee when I was at worſt, viz. that thou wouldeſt ſave my life, which then lay at ſtake; I alſo then ſolemnly took upon me ſuch and ſuch ingagements, which lye upon me as ſo many debts, and I am in pain till I have paid them. This if I ſhall do effectually,

Wilt not thou deliver my feet from falling?] Yea, I know thou wilt, Lord, for every former favour of thine is a pledge of a future.

That I may walk before God in the light of the living] Called elſe-where the Land of the living; that is in this preſent life, ſpending the ſpan of it in thy fear, and labouring to be every whit as good as I vowed to be when I was in great diſtreſs and danger. Pliny in an Epiſtle of his to one that deſired rules from him how to order his life aright, I will, ſaith he, give you one rule that ſhall be inſtead of a thouſand, Ut tales eſſe perſeveremus ſani, quales nos futuros eſſe profitemur infirmi; i. e. That you hold out to bee ſuch when well, as you promiſed to bee when weak and ſick, &c.