Final answer:
In "A Song for St. Cecelia's Day," the universal frame metaphorically describes the cosmos as structured by the divine creation, influenced by the integration of Christian and classical traditions.
Step-by-step explanation:
According to "A Song for St. Cecelia's Day," the universal frame refers metaphorically to the universe or cosmos as a whole. The phrasing suggests the idea of creation and the underlying structure that holds everything together. This structure can be moral, physical, or metaphysical, depending on the interpretive context within the poem. In the broader scope of historical literature, such imagery could derive from a mixture of religious and cultural sources, as was common during periods where emerging faiths, like Christianity, blended with prevailing traditions of the time. Hence, early Christians might have adopted and transformed classical imagery from Greek and Roman deities to fit their religious narratives, such as equating Jesus to the true vine, a symbol with ancient roots adapted to their belief system.