Polyptych of the Madonna Enthroned: Detail, Simeon
Simeon spoke the words on the scroll after he had seen the child Jesus in the Temple: Nunc dimittis servum tuum, "Now thou dost dismiss thy servant" (Luke 2:29). The phrase is part of Compline, the final prayer of the day in the canonical hours.
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More of the Presentation in the Temple
Source: Photographed at the site by Richard Stracke, shared under Attribution-NonCommercial-ShareAlike license.