Bible Verses About Quotations and Allusions: Galatians 4:30, »Cast out the bondwoman and 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!”

But what does the Scripture say? “Expel the slave woman and her son, for the slave woman’s son will never share in the inheritance with the free woman’s son.”