Marriage as a social institution predates Christianity, existing in ancient civilizations such as Mesopotamia, Egypt, Greece, and Rome, where it was governed by varying legal customs. Within the Christian tradition, the union is rooted in the creation account in the Bible, which describes a man leaving his parents to become one flesh with his wife.

Christianity did not create the institution of marriage but instead sanctified it, most notably through Christ’s presence at the wedding at Cana, which integrated the union into the Christian way of life. The formal wedding ceremony used today did not exist in the early Church; in the first centuries, believers followed contemporary Roman marriage laws and customs. The tradition characterizes marriage as a significant human challenge because it demands daily restraint from anger, pride, and the desire for domination, rather than the suppression of individual personality.

Today, the sacrament remains a focal point of Christian life, emphasizing the transition from mere social contract to a sanctified spiritual bond.