Here is a small excerpt on Bach:
Bach’s personal religious experience was embodied in all of his works which, like holy icons, reflect the reality of human life but reveal it in an illumined and transfigured form.
Bach may have lived during the Baroque era, but his music did not succumb to the stylistic peculiarities of the time. As a composer, moreover, Bach developed in an antithetical direction to that taken by art in his day. His was an epoch characterized by culture’s headlong progression towards worldliness and humanism. Center stage became ever more occupied by the human person with his passions and vices, while less artistic space was reserved for God. Bach’s art was not ‘art’ in the conventional meaning of the word; it was not art for art’s sake. The cardinal difference between the art of antiquity and the Middle Ages on the one hand and modern art on the other is in the direction it takes: pre-Renaissance art was directed towards God, while modern art is orientated towards the human person. Bach stood at the frontier of these two inclinations, two world-views, two opposing concepts of art. And, of course, he remained a part of that culture which was rooted in tradition, in cult, in worship, in religion.