Notes on Book of Genesis (Author Bishop Richard Challoner (ed.))
12:13 My sister: This was no lie; because she was his niece, being daughter to his brother Aran, and therefore, in the style of the Hebrews, she might truly be called his sister, as Lot is called Abram's brother, Gen. 14.14. See Gen. 20.12.
Original Douay-Rheims from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.