Pope Shenouda III
Thus did Prophets fast
We hear the Prophet David say: “I humbled myself with fasting;“ (Ps 35:13), “I wept and chastened my soul with fasting” (Ps 69:10), and "My knees are weak through fasting.” (Ps 109:24). King David also fasted when his son was sick and “pleaded with God for the child” lying “all night on the ground” (2 Sam 12:16).