https://www.desiringgod.org/messages/hagar-and-slavery-vs-sarah-and-freedom

Galatians 4:21-31

Abraham had two sons, one by a slave and one by a free woman. But the son of the slave was born according to the flesh, the son of the free woman through promise. ..which things are symbolic.

But the Jerusalem above is free, and she is our mother. Gal 4:26

Also: Isaiah 54:1

But The Jerusalem Above Is Free, Which Is The Mother Of Us All

He Laughs

(Gen 21:4)
6 Sarah said, “God has brought me laughter, and everyone who hears about this will laugh with me.” 7 And she added, “Who would have said to Abraham that Sarah would nurse children? Yet I have borne him a son in his old age.”

Ishmeal

Who are the descendants of Ishmael

The Faith of Abraham

The Faith of Abraham is truly inspirational.