Prayers belong strictly to the worship of God. Fasting is a subordinate aid, which is pleasing to God no farther than as it aids the earnestness and fervency of prayer.
John CalvinWhenever our sins press hard against us, whenever Satan would drive us to despair, we must hold up this shield, that God does not want us to be overwhelmed in everlasting destruction, for He has ordained His Son to be the salvation of the world.
John CalvinOur physical illnesses serve us for medicines to purge us from worldly affections and retrench what is superfluous in us, and since they are to us the messengers of death, we ought to learn to have one foot raised to take our departure when it shall please God.
John Calvin