The weddings were created by the forefathers or the Patriarchs in ancient times. The first union of Adam and Eve did not have a wedding but it was a communion relationship that served to unite the two people. But it is written at Genesis 2:18-25 in which the companion for Adam was created and then called a wife hence the term “Man and his Wife”
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Genesis 2:22-25
Easy-to-Read Version
22 The Lord God used the rib from the man to make a woman. Then he brought the woman to the man. 23 And the man said,
“Finally! One like me,
with bones from my bones
and a body from my body.
She was taken out of a man,
so I will call her ‘woman.’”
24 That is why a man leaves his father and mother and is joined to his wife. In this way two people become one.
25 The man and his wife were naked, but they were not ashamed.