Mark 1:31

(in Marc. i. 6, 8) But in that He gives most profusely His gifts of healing and doctrine on the sabbath day, He teaches, that He is not under the Law, but above the Law, and does not choose the Jewish sabbath, but the true sabbath, and our rest is pleasing to the Lord, if, in order to attend to the health of our souls, we abstain from slavish work, that is, from all unlawful things. It goes on, and immediately the fever left her, &c. The health which is conferred at the command of the Lord, returns at once entire, accompanied with such strength, that she is able to minister to those, of whose help she had before stood in need. Again, if we suppose that the man delivered from the devil means, in the moral way of interpretation, the soul purged from unclean thoughts, fitly does the woman cured of a fever by the command of God mean the flesh, restrained from the heat of its concupiscence by the precepts of continence.

By this it is signified, that God will heal a sick man, if he ministers to the Saints, through love to Christ. But he has a fever who is angry, and in the unruliness of his anger stretches forth his hands to do hurt; but if reason restrains his hands, he will arise, and so serve reason.

For the fever means intemperance, from which, we the sons of the synagoguek, by the hand of discipline, and by the lifting up of our desires, are healed, and minister to the will of Him who heals us.