CCC 2202
© Libreria Editrice Vaticana Source: vatican.va
A man and a woman united in marriage, together with their children, form a family. This institution is prior to any recognition by public authority, which has an obligation to recognize it. It should be considered the normal reference point by which the different forms of family relationship are to be evaluated.
Read the full chapter 2. You Shall Love Your Neighbor as Yourself ¶2196–2557