Genesis 11:26 - Matthew Poole's English Annotations on the Holy Bible

2056 i.e. Began to beget, as Genesis 5:32. Abram, who is first named in order of dignity, (for which cause Shem is put before Ham and Japheth, and Moses before Aaron), not in order of time, which seems to be this: Haran probably was the eldest, because Nahor married his daughter; Nahor the second; and Abram certainly was the youngest, because Terah, Abram's father, lived two hundred and five years, Genesis 11:32, and Abram after his father's death, Acts 7:4, went out of Haran, when he was seventy-five years old, Genesis 12:4,5; therefore he was not begotten in Terah's seventieth year, when Terah began to beget his sons, as here is said, but in his one hundred and thirtieth year, and so there remains seventy-five years precisely to Abram's departure. And Sarai, Haran's daughter, was but ten years younger than Abram, Genesis 17:17; and therefore Haran was Abram's elder brother.