By prayer and supplication we pour out our desires before God, asking as well those things which tend to promote his glory and display his name, as the benefits which contribute to our advantage. By thanksgiving we duly celebrate his kindnesses toward us, ascribing to his liberality every blessing which enters into our lot. . . . The sacrifice of praise and thanksgiving can never be interrupted without guilt, since God never ceases to load us with favor upon favor, so as to force us to gratitude, however slow and sluggish we may be. In short, so great and widely diffused are the riches of his liberality towards us, so marvelous and wondrous the miracles which we behold on every side, that we never want a subject and materials for praise and thanksgiving.
— John Calvin,
INSTITUTES OF THE CHRISTIAN RELIGION,
Book Third, Chapter XX, Translated by Henry Beveridge, Grand Rapids: Eerdmans, 1989, page 176 in Volume II. ISBN 0802881661