Marriage is a covenant or partnership of life between a man and a woman, which is ordered to the well-being of the spouses and to the procreation and upbringing of children. When validly contracted between two baptized people, marriage is a sacrament (matrimony) (CCC 1601) 

The Wedding Ceremony like a Sunday Mass has an Old Testament reading, a Responsorial Psalm, a New Testament reading, an alleluia verse and a Gospel reading. Below are links to the readings given for use in a wedding ceremony: