In the article we analyse the approach to the family, fatherhood and motherhood presented in Roman Catholic theology. We analyse the period after the Second Vatican Council, and discuss the new opportunities for theological knowledge and analysis, in order to see how a unified approach to man and the family, and how the creation of a relationship with God is developed through the family. We analyse how, by understanding who a person is, we can find answers to questions of the meaning of life, as well as the discovery of the perfection of parenthood. We ask how the question of God and religious knowledge can serve to spread human love in the family.