So will I sing praise unto your name forever, that I may daily perform my vows.
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Augustine of Hippo
AD 430
9. "So I will play music to Thy name, that I may render my vows from day unto day" (ver. 8). If thou playest music to the name of God, play not for a time. Wilt thou for ever play? wilt thou for everlasting play? Render to Him thy vows from day unto day. What is, render to Him thy vows from day unto day? From this day unto that day. Continue to render vows in this day, until thou come to that day: that is, "He that shall have continued even unto the end, the same shall be saved."
Day. A Levite speaks, having dedicated himself by vow to serve God continually in his temple, after his return from Babylon, (Calmet) or David expresses his resolution to testify his gratitude, by sacrifice. (Haydock)
I will sing psalms, in this life, and for ever. (Worthington)