What nuns give up when they take their vows.. Galatians 3:28 - There is neither Jew nor Greek, there is neither slave nor free person, there is not male and female; for you are all one in Christ Jesus. http://www.sistersofmercy.org/become-a-sister/ask-a-sister/ The name in religion, however, is not a tool for hiding the nun behind a borrowed name, analogous to the veil that used to cover most of her face. Rather, it is a go-between, even a stage name for the performance of religious devotion enacted in a theatre hidden behind the convent walls. Nuns themselves testify to the importance of receiving a new name. According to Josette, "You change your name along with your clothing; they go together. You leave behind your old clothes and your baptismal name! The new habit has to go with the new name and it's dramatic, a major break with your previous life."[34] For Sister Madeleine, who works with poor and dispossessed families in Toulouse, "the important thing is t...