Ambrose, to the Emperor Theodosius.
1. You thought, most blessed Emperor, so far as I gathered from your letter, that I kept away from the city of Milan, because I believed that your cause was forsaken by God. But I was not so wanting in foresight, nor so unmindful in my absence of your virtue and merits, as not to anticipate that the aid of Heaven would be with your piety, with which you would rescue the Roman Empire from the cruelty of a barbarian robber, and the dominion of an unworthy usurper.
Source: Letters (New Advent)