Genesis 17:19
But God replied, “Your wife Sarah will indeed bear you a son, and you are to name him Isaac. I will establish My covenant with him as an everlasting covenant for his descendants after him.

Genesis 21:12
But God said to Abraham, “Do not be distressed about the boy and your maidservant. Listen to everything that Sarah tells you, for through Isaac your offspring will be reckoned.

Romans 9:7-13
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.” ...

Hebrews 11:18
even though God had said to him, “Through Isaac your offspring will be reckoned.”

Genesis 24:67
And Isaac brought her into the tent of his mother Sarah and took Rebekah as his wife. And Isaac loved her and was comforted after his mother’s death.

Genesis 26:3-5
Stay in this land as a foreigner, and I will be with you and bless you. For I will give all these lands to you and your offspring, and I will confirm the oath that I swore to your father Abraham. / I will make your descendants as numerous as the stars in the sky, and I will give them all these lands, and through your offspring all nations of the earth will be blessed, / because Abraham listened to My voice and kept My charge, My commandments, My statutes, and My laws.”

Genesis 28:13-14
And there at the top the LORD was standing and saying, “I am the LORD, the God of your father Abraham and the God of Isaac. I will give you and your descendants the land on which you now lie. / Your descendants will be like the dust of the earth, and you will spread out to the west and east and north and south. All the families of the earth will be blessed through you and your offspring.

Galatians 4:28
Now you, brothers, like Isaac, are children of promise.

Genesis 35:12
The land that I gave to Abraham and Isaac I will give to you, and I will give this land to your descendants after you.”

Genesis 49:31
There Abraham and his wife Sarah are buried, there Isaac and his wife Rebekah are buried, and there I buried Leah.

1 Chronicles 1:28
The sons of Abraham were Isaac and Ishmael.

Matthew 1:2
Abraham was the father of Isaac, Isaac the father of Jacob, and Jacob the father of Judah and his brothers.

Luke 3:34
the son of Jacob, the son of Isaac, the son of Abraham, the son of Terah, the son of Nahor,

Acts 7:8
Then God gave Abraham the covenant of circumcision, and Abraham became the father of Isaac and circumcised him on the eighth day. And Isaac became the father of Jacob, and Jacob of the twelve patriarchs.

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.”