Accommodating past changes in the institution of marriage:
Marriage has taken many forms, throughout history:
The Hebrew Scriptures (a.k.a. Old Testament) describe
seven different marriage/family forms that were
practiced in ancient Israel, in addition to the standard "one man-one
woman" format .
Marriage in North America has evolved in different ways over the past
16 decades:
Polygamous marriages were introduced in the 1840s and partly phased
out in 1890. Many tens of thousands of couples still practice polygyny, mainly in the state of Utah and the Canadian
province of British Columbia. They are almost never prosecuted.
Marriages by African-American slaves were banned in some U.S. states,
and only permitted after the conclusion of the civil war.
Inter-racial marriages were considered a criminal act in some states
until 1958.
These four changes were painful experiences for many North Americans at
the time. However, people were able to take the first three changes in
stride. If the letters-to-the-editor columns of major Canadian newspapers
are any indication, Canadians seem to have reacted to same-sex marriages
with a collective yawn.