Genesis 21:2-3
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.

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 25:19
This is the account of Abraham’s son Isaac. Abraham became the father of Isaac,

Genesis 26:3-4
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,

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.

Genesis 35:11-12
And God told him, “I am God Almighty. Be fruitful and multiply. A nation—even a company of nations—shall come from you, and kings shall descend from you. / 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 46:1-4
So Israel set out with all that he had, and when he came to Beersheba, he offered sacrifices to the God of his father Isaac. / And that night God spoke to Israel in a vision: “Jacob, Jacob!” He said. “Here I am,” replied Jacob. / “I am God,” He said, “the God of your father. Do not be afraid to go down to Egypt, for I will make you into a great nation there. ...

Exodus 3:6
Then He said, “I am the God of your father, the God of Abraham, the God of Isaac, and the God of Jacob.” At this, Moses hid his face, for he was afraid to look at God.

Exodus 6:3
I appeared to Abraham, to Isaac, and to Jacob as God Almighty, but by My name the LORD I did not make Myself known to them.

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.”

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

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

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.