(The following account is from Galatians 4:21-31 KJV).

Abraham, a patriarch of the Old Testament, had two sons. God had promised Abraham and his barren wife Sarah that He would bless them with a son in their old age. Due to a lack of faith, Sarah gave Abraham her maidservant, Hagar, to whom Ishmael was born. The son, promised by God, was later born to Sarah when she was ninety years old and Abraham was one hundred. Ishmael was born after the flesh to a bondswoman who was not free while Isaac was born to a free woman by the promise of God.Read more