In keeping with the theme of the year, the work is entitled Lumen Fidei (the light of faith) and can be found in its entirety here. Of course there are already many summaries available online, but since our purpose here is to encourage parents as they are passing that light on to their own children, I thought you might be interested in starting with these particular passages which highlight the beginnings of faith at baptism and the transmission of faith through the family:
43. The structure of baptism, its form as a rebirth in which we receive a new name and a new life, helps us to appreciate the meaning and importance of infant baptism. Children are not capable of accepting the faith by a free act, nor are they yet able to profess that faith on their own; therefore the faith is professed by their parents and godparents in their name. Since faith is a reality lived within the community of the Church, part of a common “We”, children can be supported by others, their parents and godparents, and welcomed into their faith, which is the faith of the Church; this is symbolized by the candle which the child’s father lights from the paschal candle. The structure of baptism, then, demonstrates the critical importance of cooperation between Church and family in passing on the faith. Parents are called, as Saint Augustine once said, not only to bring children into the world but also to bring them to God, so that through baptism they can be reborn as children of God and receive the gift of faith.
52. In Abraham’s journey towards the future city, the Letter to the Hebrews mentions the blessing which was passed on from fathers to sons (cf. Heb 11:20-21). The first setting in which faith enlightens the human city is the family. I think first and foremost of the stable union of man and woman in marriage. This union is born of their love, as a sign and presence of God’s own love, and of the acknowledgment and acceptance of the goodness of sexual differentiation, whereby spouses can become one flesh (cf. Gen 2:24) and are enabled to give birth to a new life, a manifestation of the Creator’s goodness, wisdom and loving plan. Grounded in this love, a man and a woman can promise each other mutual love in a gesture which engages their entire lives and mirrors many features of faith. […]
53. In the family, faith accompanies every age of life, beginning with childhood: children learn to trust in the love of their parents. This is why it is so important that within their families parents encourage shared expressions of faith which can help children gradually to mature in their own faith. Young people in particular, who are going through a period in their lives which is so complex, rich and important for their faith, ought to feel the constant closeness and support of their families and the Church in their journey of faith.
54. Absorbed and deepened in the family, faith becomes a light capable of illumining all our relationships in society.