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 ...

The Holy Spirit can be gentle as a dove, or rambunctious and unpredictable as a wild goose. Ferdinand von Wright, “The Goose Disciplines the Duck,” 1858 (photo: Public Domain) ...