One of the marks of the sacrament of Confirmation is that someone takes a new name. Its true—and weird—that while an individual chooses the name of a saint, in a much more significant way the saint chooses that individual, drawing them into the power of his or her life and witness. But two of the most popular names for young men and women in my three years of presiding at Confirmation—Sebastian and Teresa—reflect in a more universal way what it means to take this sacramentum, or sacred oath, and become a confirmed member of Christ’s mystical body.