First, that's a funny thing to say because Abraham himself had a concubine (Agar), who bore him a son (Ishmael). And his grandson Jacob married Leah and Rebecca

First, that's a funny thing to say because Abraham himself had a concubine (Agar), who bore him a son (Ishmael). And his grandson Jacob married Leah and Rebecca. Second, traditional polygamy was never akin to modern polyamory. It included contract/commitment, not short-term engagements.