John Cassian

A saint is different from a sinner, not because he or she is not tempted in the same way but because he or she is not defeated even by a great assault, while the other is overcome even by a slight temptation. The strength of any good person would not, as we said, be worthy of praise, if the victory was gained without being tempted. Most certainly there is no room for victory where there is no struggle and conflict. "Blessed is the one who endures trial, for when he has stood the test, he will receive the crown of life that God has promised to those who love him." According to the apostle Paul also, "power is made perfect" not in ease and delights but "in weakness." "And behold," says he, "I make you this day a fortified city, an iron pillar and bronze walls, against the whole land, against the kings of Judah, its princes, its priests and the people of the land. They will fight against you; but they shall not prevail against you, for I am with you, says the Lord, to deliver you."