" Now, perhaps thou wouldest say, If I rejoice in God, when I am prosperous, because it is His mercy; what am I to do when I am in sorrow, in tribulation? It is His mercy, when I am prosperous; is it then His cruelty, when I am in adversity? If I praise His mercy when it is well with me, am I then to exclaim against His cruelty when it is ill? No. But when it is well, praise His mercy: when ill, praise His truth: because He scourgeth sins, He is not unjust.... "

― Augustine of Hippo , The Complete Works of Saint Augustine: The Confessions, On Grace and Free Will, The City of God, On Christian Doctrine, Expositions on the Book Of Psalms, ... (50 Books With Active Table of Contents)