Most of us are familiar with the traditional images of the Holy Spirit: the dove, the wind, the tongues of fire. In the early Middle Ages, Celtic Christians instead envisioned the Holy Spirit as a wild goose. If you’ve ever been around geese, you know that they can be loud and uncontrollable. And that’s exactly the reason why these Christians chose this symbol. They realized that God’s Spirit cannot be tamed. The Holy Spirit wakes us up, energizes and surprises us. The Danish philosopher Søren Kierkegaard tells a story about a town where only ducks live. Every Sunday the ducks...