Pope Leo XIV is the first pope who belongs to the Order of Saint Augustine, whose principles, priests say, offer a window into what type of pontiff Leo may be. Augustinians follow spiritual ideals aimed at bringing people together,

Pope Leo XIV, elected May 8, is the first pope from the Order of St. Augustine, also known as the Augustinians or OSA, an ancient religious order with thousands of members worldwide.

Pope Leo XIV celebrated Mass and had lunch with members of his Augustinian religious order on Tuesday, slipping into the congregation’s headquarters outside St. Peter’s Square where he served for 12 years as superior.