Genesis 18:10-14
Then the LORD said, “I will surely return to you at this time next year, and your wife Sarah will have a son!” Now Sarah was behind him, listening at the entrance to the tent. / And Abraham and Sarah were already old and well along in years; Sarah had passed the age of childbearing. / So she laughed to herself, saying, “After I am worn out and my master is old, will I now have this pleasure?” ...

Genesis 21:1-3
Now the LORD attended to Sarah as He had said, and the LORD did for Sarah what He had promised. / So Sarah conceived and bore a son to Abraham in his old age, at the very time God had promised. / And Abraham gave the name Isaac to the son Sarah bore to him.

Romans 4:19-21
Without weakening in his faith, he acknowledged the decrepitness of his body (since he was about a hundred years old) and the lifelessness of Sarah’s womb. / Yet he did not waver through disbelief in the promise of God, but was strengthened in his faith and gave glory to God, / being fully persuaded that God was able to do what He had promised.

Hebrews 11:11-12
By faith Sarah, even though she was barren and beyond the proper age, was enabled to conceive a child, because she considered Him faithful who had promised. / And so from one man, and he as good as dead, came descendants as numerous as the stars in the sky and as countless as the sand on the seashore.

Galatians 4:22-23
For it is written that Abraham had two sons, one by the slave woman and the other by the free woman. / His son by the slave woman was born according to the flesh, but his son by the free woman was born through the promise.

Genesis 16:1-2
Now Abram’s wife Sarai had borne him no children, but she had an Egyptian maidservant named Hagar. / So Sarai said to Abram, “Look now, the LORD has prevented me from bearing children. Please go to my maidservant; perhaps I can build a family by her.” And Abram listened to the voice of Sarai.

Genesis 12:2-3
I will make you into a great nation, and I will bless you; I will make your name great, so that you will be a blessing. / I will bless those who bless you and curse those who curse you; and all the families of the earth will be blessed through you.”

Genesis 15:4-5
Then the word of the LORD came to Abram, saying, “This one will not be your heir, but one who comes from your own body will be your heir.” / And the LORD took him outside and said, “Now look to the heavens and count the stars, if you are able.” Then He told him, “So shall your offspring be.”

Genesis 22:17-18
I will surely bless you, and I will multiply your descendants like the stars in the sky and the sand on the seashore. Your descendants will possess the gates of their enemies. / And through your offspring all nations of the earth will be blessed, because you have obeyed My voice.”

Genesis 24:60
And they blessed Rebekah and said to her, “Our sister, may you become the mother of thousands upon thousands. May your offspring possess the gates of their enemies.”

Isaiah 51:2
Look to Abraham your father, and to Sarah who gave you birth. When I called him, he was but one; then I blessed him and multiplied him.

Romans 9:7-9
Nor because they are Abraham’s descendants are they all his children. On the contrary, “Through Isaac your offspring will be reckoned.” / So it is not the children of the flesh who are God’s children, but it is the children of the promise who are regarded as offspring. / For this is what the promise stated: “At the appointed time I will return, and Sarah will have a son.”

1 Peter 3:6
just as Sarah obeyed Abraham and called him lord. And you are her children if you do what is right and refuse to give way to fear.

Genesis 25:21-26
Later, Isaac prayed to the LORD on behalf of his wife, because she was barren. And the LORD heard his prayer, and his wife Rebekah conceived. / But the children inside her struggled with each other, and she said, “Why is this happening to me?” So Rebekah went to inquire of the LORD, / and He declared to her: “Two nations are in your womb, and two peoples from within you will be separated; one people will be stronger than the other, and the older will serve the younger.” ...

Genesis 30:22-24
Then God remembered Rachel. He listened to her and opened her womb, / and she conceived and gave birth to a son. “God has taken away my shame,” she said. / She named him Joseph, and said, “May the LORD add to me another son.”