Giuseppe Angeli (1709-1798), The Transfiguration
Church of St. Roch, Venice, Italy
As in the gospel accounts Jesus' garments become intensely white and his face gleams like the sun. He is flanked by Elijah on the right and Moses on the left. Moses holds erect one of the tablets of the Law.
The image harmonizes the gospel accounts of the disciples' reactions. In Luke the disciples awoke from a heavy sleep and "saw his glory" (9:32), so Peter (in the middle foreground, with the short, square beard) is shown rising as from sleep, and the disciple on the right responds to the glory with raised arms. The sleep is not in Matthew and Mark, who report that the disciples were so "struck with fear" (Mark 9:5) that they "fell upon their face" (Matthew 17:6). This appears to be the case with the disciple on the left.
For the attribution to Giuseppe Angeli, see Zanotto, 389-90. A Wikipedia page on the church (retrieved 2019-01-02) claims that the apse was originally painted by Il Pordenone, but there is no mention of such a work in Charles Cohen's monumental study of Pordenone, even in his long list of "lost works." Nor could I find any mention of Pordenone's working on the apse in Artcyclopedia and similar online references.
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Photographed at the church by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.