The 'One Thing' Is Three makes deep theology accessible to everyday Catholics. With humor and ease, Fr. Michael Gaitley, MIC, deftly unlocks the 'one thing,' the key to the Church's wisdom, and the greatest mystery of the Catholic faith: the Most Holy Trinity. What's more, it makes even what's familiar or forgotten new, exciting, and relevant. From the author of 33 Days to Morning Glory, Consoling the Heart of Jesus, and ?You Did It to Me?, this is a must-have for anyone interested in deepening their understanding of the Catholic faith.