Carl and Jennifer have decided to get married. They see marriage as a journey where two individuals become one union before God. The Bible passage from Mark 10:6-9 describes how marriage creates a new family unit where husband and wife are no longer separate but one flesh, a union joined together by God.
90. "But at the beginning of creation God 'made them male and female. For
this reason a man will leave his father and mother and be united to his
wife, and the two will become one flesh.' So they are no longer two, but
one. Therefore what God has joined together, let man not separate."
Mark 10:6-9