Formerly, their life was a divided one. The inward struggle was almost incessant. Comparatively speaking, there was no rest, no peace. But now, the unity of their affections in God has put an end to all interior trouble, except so far as the soul is tried by temptations originating from without. Formerly, they found the service of God, both in its inward and outward forms, obstructed and hard, requiring the greatest effort. But now they rejoice in God always, as if they had no other business, and no other desire. Formerly, they could hardly eat, or speak, or move, without great anxiety, in consequence of finding sin intermingled with everything. But now they find the grace of God sufficient for the regulation of the appetites and the social principles; and those things which were once occasions of temptation and sorrow, are now occasions of gratitude. Formerly, they conformed their actions to God, who was a God afar off'; — and this was troublesome, because the agency was in a great degree in themselves. But now God, who dwells within, conforms the soul to the action; and thus they are not conscious either of effort or trouble. In a word, "their yoke is easy, and their burden is light."
— edited from A Treatise on Divine Union (1851) Part 8, Chapter 9.