Abram.

Genesis 11:27-32
This is the account of Terah. Terah became the father of Abram, Nahor, and Haran. And Haran became the father of Lot. . . .

Genesis 17:5
No longer will you be called Abram, but your name will be Abraham, for I have made you the father of many nations.

Joshua 24:2
And Joshua said to all the people, "This is what the LORD, the God of Israel, says: 'Long ago your fathers, including Terah, the father of Abraham and Nahor, lived beyond the Euphrates and worshiped other gods.

Nehemiah 9:7
You are the LORD, the God who chose Abram, who brought him out of Ur of the Chaldeans and gave him the name Abraham.