[Bushwacker777]

Abraham had a bunch of wives. When they are your wives, it isn’t adultery.

[horse_doc]

Given that Abraham’s offspring by his second wife/concubine resulted in the whole wretched Arab world, I’d say that it’s not a good idea, whatever you want to call it.

[N. Theknow]

IIRC, God's son, obviously with some Fatherly guidance, put the matter to rest regarding multiple wives.

Also, IIRC, Abraham had one wife Sarah until a low point in their lives saw him wed Hagar. That polyugamous event has led to much strife.