A person who doubts whether God will help him during temptations does not believe in God and is not worthy to be called Christian. A truly believing and pious person, even if he finds himself in the very jaws of the serpent, still believes, even then, that God can rescue him. Thus did the martyrs believe and they fearlessly entered the flaming furnace, and God delivered them because of their unwavering faith. In this way He delivered the Three Youths from the Babylonian furnace, and St. Thekla from the fire and the cruel beasts - all, without a doubt, because of their pure faith.
+Abba Isaiah of Scetis, from Matericon Instructions of Abba Isaiah to the honorable nun Theodora, #52