The psychology of faith has been studied, from the theological standpoint not always felicitously, because the Biblical data have not been carefully ascertained. It may be useful to know something about the psychology of faith, but it is of far greater importance to understands its religious function in redemption, and unless the latter is apprehended, the psychology is apt to turn out, from the Biblical point of view, sheer foolishness (Geerhardus Vos, Biblical Theology, 83).