Yea, for therefore you took up arms, not to be idle, but to fight. For this cause neither does God hinder the temptations as they come on, first to teach you that you have become much stronger; next, that you may continue modest neither be exalted even by the greatness of your gifts, the temptations having power to repress you; moreover, in order that that wicked demon, who is for a while doubtful about your desertion of him, by the touchstone of temptations may be well assured that you have utterly forsaken and fallen from him; fourthly, that you may in this way be made stronger, and better tempered than any steel; fifthly, that you may obtain a clear demonstration of the treasures entrusted to you.
For the devil would not have assailed you, unless he had seen you brought to greater honor. Hence, for example, from the beginning, he attacked Adam, because he saw him in the enjoyment of great dignity. For this reason he arrayed himself against Job, because he saw him crowned and proclaimed by the God of all.
Homilies on Matthew
Homily 13; Matthew 4:1