But this is not all. If we will take the trouble carefully to analyze our religious feelings, and to trace them in their origin and their relations, we shall find this important truth, sustained by additional evidence from that source. If, for instance, we should undertake to enter into an examination of the nature and operations of the principle of LOVE, we could not fail to see, that it requires the antecedent existence of faith in the beloved object as the basis and the condition of its own existence. In other words, there cannot be love without faith going before. Take almost any other Christian grace, such as the spirit of submission, of gratitude, or of prayer, and it will be found that they sustain intimate relations with other states of the mind, particularly with faith; and that in reality they cannot possibly exist without faith. When they are closely examined, all the Christian graces, however divergent and remote they may now appear, will be found to converge to one centre, and to rest upon one foundation. A remark, which furnishes a reason for the remarkable and important saying of the Scriptures, that “without faith it is impossible to please God.”
We may add further, that what has been said is confirmed by individual experience; particularly the experience of eminent Christians. There may have been remarkable experiences without much faith; experiences characterized by visions and by strong emotions, and which have been the subjects of much attention and conversation; but there has not been, and there cannot be, a sound and thorough scriptural experience, one which will truly renovate the soul and will carry a person victoriously through the trials and labors of life, without strong faith as its basis. So that it can be truly said of all those eminent men in different countries and different ages of the world, who have done most and suffered most for the cause of true religion, like the worthies mentioned in the eleventh chapter of Hebrews, that they lived and died in faith. They had other eminent Christian graces, it is true, but it was strong faith, which gave a character to their lives and actions.
— edited from The Life of Faith (1852) Part 1, Chapter 5.