Despite the fact that "A Song for St. Cecilia's Day, 1687" is a Catholic event, the poem contains references to more than one religion system. In addition to the Biblical connections to Jubal, Heaven, and angels, as well as the Catholic story of St. Cecilia, the speaker integrates the Greek tale of Orpheus. In this version, he is referred to as "the poet," which is similar to the character in the Orphic legend. The reference to Jubal may come from the Old Testament book of Genesis 4:21, where it says that "Jubal was the son of Lamech and the father of Tubal-Cain, who forged all kinds of tools out of iron." This would make him around 10 years old when Cecilia was born. The name "Tubal" comes from the Hebrew word for copper, which matches up with what we know about iron being used instead. Heaven refers to the paradise created by God for his people, where Jubal was meant to live with other musicians after death. The only problem was, he was still alive when Cecilia was born so she couldn't be one of his creations. As for the angel part, it's possible that the speaker is referring to an actual angel who played upon Cecilia's harp. There are several stories about saints who were visited by angels while they were alive, but none of them happened in Italy until much later.