Espousal
From BiblePortal Wikipedia
Webster's Dictionary [1]
(1): ( n.) The uniting or allying one's self with anything; maintenance; adoption; as, the espousal of a quarrel.
(2): ( n.) The act of espousing or betrothing; especially, in the plural, betrothal; plighting of the troths; a contract of marriage; sometimes, the marriage ceremony.
Morrish Bible Dictionary [2]
See Marriage.