The Son the Ruler and Saviour of All
These salutary revolutions, in accordance with the order of change, are distinguished both by times, and places, and honours, and cognitions, and heritages, and ministries, according to the particular order of each change, up to the transcendent and continual contemplation of the Lord in eternity.
Now that which is lovable leads, to the contemplation of itself, each one who, from love of knowledge, applies himself entirely to contemplation. Wherefore also the Lord, drawing the commandments, both the first which He gave, and the second, from one fountain, neither allowed those who were before the law to be without law, nor permitted those who were unacquainted with the principles of the Barbarian philosophy to be without restraint. For, having furnished the one with the commandments, and the other with philosophy, He shut up unbelief to the Advent. Whence every one who believes not is without excuse. For by a different process of advancement, both Greek and Barbarian, He leads to the perfection which is by faith.
And if any one of the Greeks, passing over the preliminary training of the Hellenic philosophy, proceeds directly to the true teaching, he distances others, though an unlettered man, by choosing the compendious process of salvation by faith to perfection.
Everything, then, which did not hinder a man's choice from being free, He made and rendered auxiliary to virtue, in order that there might be revealed somehow or other, even to those capable of seeing but dimly, the one only almighty, good God— from eternity to eternity saving by His Son.
And, on the other hand, He is in no respect whatever the cause of evil. For all things are arranged with a view to the salvation of the universe by the Lord of the universe, both generally and particularly. It is then the function of the righteousness of salvation to improve everything as far as practicable. For even minor matters are arranged with a view to the salvation of that which is better, and for an abode suitable for people's character. Now everything that is virtuous changes for the better; having as the proper cause of change the free choice of knowledge, which the soul has in its own power. But necessary corrections, through the goodness of the great overseeing Judge, both by the attendant angels, and by various acts of anticipative judgment, and by the perfect judgment, compel egregious sinners to repent.
Source: The Stromata, or Miscellanies (New Advent)