From H.C.G. Moule’s article on justification by faith in volume 3 of “The Fundamentals”
We are here warned off from the temptation to erect Faith into a Saviour, to rest our reliance upon our Faith, if I may put it so. That is a real temptation to many. Hearing, and fully thinking, that to be justified we must have Faith, they, we, are soon occupied with an anxious analysis of our Faith. Do I trust enough? Is my reliance satisfactory in kind and quantity? But if saving Faith is, in its essence, simply a reliant attitude, then the question of its effect and virtue is at once shifted to the question of the adequacy of its Object. The man then is drawn to ask, not, Do I rely enough? but, Is Jesus Christ great enough, and gracious enough, for me to rely upon? The introspective microscope is laid down. The soul�s open eyes turn upward to the face of our Lord Jesus Christ; and Faith forgets itself in its own proper action. In other words, the man relies instinctively upon an Object seen to be so magnificently, so supremely, able to sustain him. His feet are on the Rock, and he knows it, not by feeling for his feet, but by feeling the Rock.