Christian Polygamy

[rogueblack]

There are sects, like some Mormons, who are polygamous. There are some free-spirited Christians who are also polygamous (although not in an organised way, just more of a wanting-to-get-rocks-off way).

Where in Biblical Scriptures is polygamy supported?
Are there scriptures that specifically denounce polygamy?

Is it actually listed as a sin?

How did Christian marriages become monogamous as a standard? Was this a poor decision?

Is monogamy unnatural?