why do popes choose a new name

Popes choose a new name as one of their first acts after election to signify a new stage in life and their entry into a new role serving God and the Church. This tradition began in the early centuries of the Church, notably with Pope John II in 533, who chose a new name because his birth name, Mercurius, was associated with a pagan god. Over time, selecting a new papal name became customary, symbolizing a "second birth" and the assumption of a new mission or identity as pope. The chosen name often reflects admiration for a predecessor pope, a saint, or a particular theological emphasis or mission the new pope wants to highlight. Though there is no strict rule requiring popes to change their names, it has become a deeply entrenched tradition. For example, Pope Francis chose his name in honor of St. Francis of Assisi to symbolize peace, care for the poor, and humility. The tradition also serves to connect the new pope with the heritage and legacy of the Church while marking a new chapter under his leadership.