Polygamy: Domestic Unhappiness in Abraham's Family
Source: Nav
Genesis 16:1
Now Abram’s wife Sarai had borne him no children, but she had an Egyptian maidservant named Hagar.
Genesis 21:9–16
But Sarah saw that the son whom Hagar the Egyptian had borne to Abraham was mocking her son, / and she said to Abraham, “Expel the slave woman and her son, for the slave woman’s son will never share in the inheritance with my son Isaac!” / Now this matter distressed Abraham greatly because it concerned his son Ishmael.