John Trapp on Psalms 61:8

Verſ. 8. So will I ſing praiſe unto thy name for ever] Concluſio votiva. Praiſe is ſo pleaſing a ſervice to God, that he indenteth with his people for it, Pſal. 50.15. and they knowing his minde therein, do uſually reſtipulate that they will perform it; as holding it the leaſt that they in conſcience can do, and knowing it the moſt that they are able to do. They preſent it therefore to God, as that Grecian did his ſmall gift to Auguſtus, ſaying, [non-Latin text not transcribed]. If I had a better thing I could well beteem it thee.

That I may daily perform my vows] Which till they be paid, a true-hearted Votary is in pain: for he accounteth them due debts to God.