Sometime around 1975, I read a book called Shape of Illusion by William E. Barrett (author of Lilies of the Field). I had forgotten about the book until someone asked on Fiction_L for it. I remembered the plot vividly, and that the author's name began with B because I used to shelve it as a page. Funny, I first thought of another book by the author - The Left Hand of God, which I also read. But Shape of Illusion was a powerful story. The following is the plot as summarized on Amazon.com.
"In a painting depicting Jesus, just after Pilot has
sentenced him to death, each viewer sees himself or
herself as a hateful member of the mob crying for
Christ's blood. The painting has been hidden for
hundreds of years. Now, found by a New York gallery
owner, it shakes the few he dares show it to, to their
foundations. But this isn't the story of the painting,
as much as the twentieth century artist who travels to
Germany to piece together the story of the painting.
Martin Heidegger the German Philosopher talks about
art in terms of a temple where the gods have fled, and
the true artist being someone who can bring them back.
Barrett is a master at creating a sense of the
spiritual in his readers. In Shape of Illusion he
brings life into the temple of the human spirit. Don't
get me wrong. Although Barrett was Catholic and his
books reflect that, there is no secularism in this
story. In fact the protagonist is a agnostic and his
beliefs don't change. But his sense of something
powerful outside himself does. And the way he figures
out he's met the girl he's supposed to marry is worth
the read alone."