Lumen Fidei is Pope Francis's first encyclical and addresses the significance of faith during the Year of Faith, emphasizing faith as a personal encounter with Jesus, a source of light and community, and a way of seeing the world through Christ's eyes. The document elaborates on four main themes: faith as encounter, faith as light, faith as communal, and faith as a way of seeing, while also drawing connections to the teachings of his predecessor, Pope Benedict XVI. Additionally, it highlights the importance of Mary as a model of faithful discipleship.