Say “Holy Spirit,” and most imagine a dove or tongues of fire gently descending. But the Celts envisioned something wilder: a goose in flight—honking across the sky, untamed and impossible to ignore.

TAMPA, Fla. — Every year, a girl from St. Nicholas Greek Orthodox Cathedral’s choir is selected to be the dove bearer at the Epiphany celebration in Tarpon Springs. This year, the dove bearer selected ...