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 Romans 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 Galatians 6:2: "Bear ye one another's burdens."
Summa Theologiae 2-2.32.2
