Then, why do these plagues, such as epidemics, locusts and...
Then, why do these plagues, such as epidemics, locusts and the like that we have mentioned, not last for such a long time that they would invade and devastate the entire world? In fact, they take place for some time and then soon disappear. Do you not see that the world is protected and saved from the great, terrible events that if even one of them were to take place for a long time, it might cause the destruction of the world?
Thus, the world is kept safe through these simple plagues so that people may be disciplined and reform themselves and take lessons. Then, after not too long, when people feel desperate, these plagues disappear; therefore, the occurrence of these plagues is as a warning, and their disappearance is as a mercy to the people. The Manicheans say: if the world has a kind, merciful creator, then why do these calamities and misfortunes take place?
They say that the life of man in this world should be free from any trouble. We say: if it is so, man, out of ingratitude and haughtiness, will do everything that fits neither the religion nor this worldly life.
Quite often, you find that many people who have been nurtured in luxury and ease forget even that they are human, or they have a Lord, or harm or misfortunes may afflict them, or they have to be merciful to the weak, help the poor, be kind to the miserable, and have pity for the weak and distressed. But when misfortunes afflict them and they taste their bitterness, they awake from their ignorance and indifference and turn back to that which they should have been doing.
Those who deny these harmful matters are like children who hate bitter drugs, become angry when prevented from harmful foods, dislike disciplines and work, like to be free for amusement and idleness and like to have anything to eat and drink. They do not know where idleness takes them. It takes them to a bad upbringing and bad habits. Harmful, yet delicious foods cause them different illnesses and diseases.
Disciplines bring them reform and goodness, and bitter drugs benefit them even if they are somewhat troublesome. If they ask: why has man not been made infallible against sins so that he would not then need to be afflicted with misfortunes? It is answered: how would it be if man were not praised and rewarded for the good deeds he does? If they ask: what harm will it be to man if he is not rewarded for the good deeds he does as long as he enjoys pleasures and bliss?