I answer that, The aforesaid distinction of almsdeeds is suitably taken from the various needs of our neighbor: some of which affect the soul, and are relieved by spiritual almsdeeds, while others affect the body, and are relieved by corporal almsdeeds. For corporal need occurs either during this life or afterwards. If it occurs during this life, it is either a common need in respect of things needed by all, or it is a special need occurring through some accident supervening. In the first case, the need is either internal or external. Internal need is twofold: one which is relieved by solid food, viz. hunger, in respect of which we have "to feed the hungry"; while the other is relieved by liquid food, viz. thirst, and in respect of this we have "to give drink to the thirsty." The common need with regard to external help is twofold; one in respect of clothing, and as to this we have "to clothe the naked": while the other is in respect of a dwelling place, and as to this we have "to harbor the harborless." Again if the need be special, it is either the result of an internal cause, like sickness, and then we have "to visit the sick," or it results from an external cause, and then we have "to ransom the captive." After this life we give "burial to the dead."
In like manner spiritual needs are relieved by spiritual acts in two ways, first by asking for help from God, and in this respect we have "prayer," whereby one man prays for others; secondly, by giving human assistance, and this in three ways. First, in order to relieve a deficiency on the part of the intellect, and if this deficiency be in the speculative intellect, the remedy is applied by "instructing," and if in the practical intellect, the remedy is applied by "counselling." Secondly, there may be a deficiency on the part of the appetitive power, especially by way of sorrow, which is remedied by "comforting." Thirdly, the deficiency may be due to an inordinate act; and this may be the subject of a threefold consideration. First, in respect of the sinner, inasmuch as the sin proceeds from his inordinate will, and thus the remedy takes the form of "reproof." Secondly, in respect of the person sinned against; and if the sin be committed against ourselves, we apply the remedy by "pardoning the injury," while, if it be committed against God or our neighbor, it is not in our power to pardon, as Jerome observes (Super Matth. xviii, 15). Thirdly, in respect of the result of the inordinate act, on account of which the sinner is an annoyance to those who live with him, even beside his intention; in which case the remedy is applied by "bearing with him," especially with regard to those who sin out of weakness, according to Rm. 15:1: "We that are stronger, ought to bear the infirmities of the weak," and not only as regards their being infirm and consequently troublesome on account of their unruly actions, but also by bearing any other burdens of theirs with them, according to Gal. 6:2: "Bear ye one another's burdens."