7259. As the doctrine of charity was so ample, the ancients, with whom the doctrine of charity was the very doctrine of the church, distinguished charity toward the neighbor into many classes, which they also subdivided, and gave a name to each class, and taught how charity was to be exercised toward those who are in one class, and how toward those in another; and in this way they reduced the doctrine of charity into order, and also the exercises of charity, that these might fall distinctly under the view of the understanding.