• Gen 11:30 — But Sarai was barren; she had no child.
• Gen 17:16 — And I will bless her, and give thee a son also of her: yea, I will bless her, and she shall be a mother of nations; kings of people shall be of her.
• Gen 21:1 — And the LORD visited Sarah as he had said, and the LORD did unto Sarah as he had spoken.
• Gen 21:2 — For Sarah conceived, and bare Abraham a son in his old age, at the set time of which God had spoken to him.

8 Christian traditions affirm this interpretation.

• Anglican · Anglican
• Roman Catholic · Catholic
• Evangelical · Evangelical
• Lutheran · Lutheran
• Eastern Orthodox · Orthodox
• Patristic · Patristic
• Reformed · Reformed
• Wesleyan · Wesleyan

3 passages from 3 historic works cite scripture this interpretation depends on.

• City of God · 1 passage
• Catechism of the Catholic Church · 1 passage
• Antiquities of the Jews · 1 passage