Long after any Titaness bore it, the name Phoebe reappears in a wholly different context with no claimed mythological connection: the New Testament's Letter to the Romans, where the apostle Paul commends a woman named Phoebe, described as a deacon of the church at Cenchreae near Corinth, entrusting her, on most scholarly readings, with carrying the letter itself to its recipients in Rome, making her one of relatively few named women given a specific role in the earliest Christian communities as the text itself describes them. The name Phoebe in this context is simply the ordinary Greek word for bright or radiant, the same adjective behind the Titaness's own name and behind Apollo's epithet Phoebus, and there is no suggestion in the text or in early Christian tradition that the name was chosen with the old goddess in mind; Greek speaking families of the period drew on a shared stock of meaningful Greek names regardless of their mythological pedigree, much as many Greek personal names continued in ordinary use long after the deities or heroes who first bore them had ceased to be objects of belief.
The coincidence is nonetheless a useful illustration of how a name can carry on in everyday use, entirely detached from its divine origin, to be picked up again centuries later by scholars, novelists and parents drawing not on Titan genealogy but on a New Testament deaconess, or simply on the plain sound and meaning of a word for brightness that had, by the first century CE, long since become common Greek vocabulary rather than a name reserved for goddesses.