Genesis 25:19

Now these are the records of the generations of Isaac, Abraham’s son: Abraham became the father of Isaac;

Matthew 1:2

Abraham was the father of Isaac, Isaac the father of Jacob, and Jacob the father of Judah and his brothers.

1 Chronicles 1:32

The sons of Keturah, Abraham’s concubine, whom she bore, were Zimran, Jokshan, Medan, Midian, Ishbak and Shuah. And the sons of Jokshan were Sheba and Dedan.

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

And He gave him the covenant of circumcision; and so 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.

Treasury of Scripture Knowledge

Summary

And these are the generations of Isaac, Abraham's son: Abraham begat Isaac:

Bible References

Abraham

1 Chronicles 1:32
The sons of Keturah, Abraham’s concubine, whom she bore, were Zimran, Jokshan, Medan, Midian, Ishbak and Shuah. And the sons of Jokshan were Sheba and Dedan.
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
And He gave him the covenant of circumcision; and so 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.