In addition to the protection/provision factor, polygamy enabled a much faster expansion of humanity, fulfilling God’s command to “be fruitful and increase in number; multiply on the earth” (Genesis 9:7).
Mbali na ulinzi / utunzi, mitala iliwezesha upanuzi wa jamii kwa kasi zaidi, kutimiza amri ya Mungu ya "Nanyi zaeni, mkaongezeke; zaeni sana katika nchi, mkaongezeke ndani yake" (Mwanzo 9:7).