And these views are the more important and urgent when we consider that sin, here and elsewhere, is measured, not so much by the occasion on which it exists, as by the spirit which is manifested in it. It may utter itself in a loud and fierce voice, or gently breathe itself out in the slightest wish, that the state of things were otherwise than it is. But in the latter case, as well as in the former, there is the element of rebellion; something, no matter how small it may be, which is not in entire harmony with God and the divine arrangements. In a word, there is sin. But this is not all. It is sin laying the foundation for other and higher sin. On the other hand, a cheerful acquiescence, in such cases as have been mentioned, is not only right in itself, but, by purifying the tendencies of the will, is laying the foundation for a better state of things in other cases of greater difficulty in all coming time.
— edited from A Treatise on Divine Union (1851) Part 5, Chapter 6.