The news reached the king of Nineveh, and he arose from his throne, and took off his royal robe, covered himself with sackcloth, and sat in ashes.
If now any one asks whether penitence is always to be accompanied with fasting, ashes, and sackcloth, the answer is at hand, — that the faithful ought through their whole life to repent: for except everyone of us continually strives to renounce himself and his former life, he has not yet learned what it is to serve God; for we must ever contend with the flesh. But though there is a continual exercise of repentance, yet fasting is not required of us always. It then follows that fasting is a public and solemn testimony of repentance, when there appears to be some extraordinary evidence of God’s wrath. Thus have we seen that the Jews were by Joel called to lie in ashes, and to put on sackcloth because God had come forth, as it were, armed against them; and all the Prophets had declared that destruction was nigh the people. In the same manner the Ninevites, when terrified by this dreadful edict, put on sackcloth proclaimed a fasts because this was usually done in extremities. We now then perceive why the king, having himself put on sackcloth, enjoined on the whole people both fasting and other tokens of repentance. 