Genesis 16:1
"Now Sarai Abram’s wife bare him no children: and she had an handmaid, an Egyptian, whose name was Hagar."
Cross References (ranked by relevance)
Which things are an allegory: for these are the two covenants; the one from the mount Sinai, which gendereth to bondage, which is Agar.
And he entreated Abram well for her sake: and he had sheep, and oxen, and he asses, and menservants, and maidservants, and she asses, and camels.
And he dwelt in the wilderness of Paran: and his mother took him a wife out of the land of Egypt.
And there was a certain man of Zorah, of the family of the Danites, whose name was Manoah; and his wife was barren, and bare not.
And God said unto Abraham, Let it not be grievous in thy sight because of the lad, and because of thy bondwoman; in all that Sarah hath said unto thee, hearken unto her voice; for in Isaac shall thy seed be called.
And Isaac intreated the LORD for his wife, because she was barren: and the LORD was intreated of him, and Rebekah his wife conceived.
And, behold, thy cousin Elisabeth, she hath also conceived a son in her old age: and this is the sixth month with her, who was called barren.
But Sarai was barren; she had no child.
And they had no child, because that Elisabeth was barren, and they both were now well stricken in years.