Genesis 11, Abraham

Genesis 11:10, 26 NIV
This is the account of Shem’s family line. Two years after the flood, when Shem was 100 years old, he became the father of Arphaxad.

Genesis 11:26 NIV
After Terah had lived 70 years, he became the father of Abram, Nahor and Haran.

Abraham was from Shem bloodline. Who is Shem?  Noah children.

Genesis 9:18 NIV
The sons of Noah who came out of the ark were Shem, Ham and Japheth. (Ham was the father of Canaan.)

Genesis 8:4 NIV
and on the seventeenth day of the seventh month the ark came to rest on the mountains of Ararat.