I got in an argument with a guy on the biblical genealogies. He said Lot was Abraham's descendant. Well, I studied the Biblical genealogies of the OT. and had extracted the genealogies.
I tried to explain to the guy that Lot was Abraham's nephew and heir until the birth of the Ishmael and Isaac, and the children of Abraham's concubine, Keturah, but was not a direct descendant of Abraham.
The guy wasn't having it, he became alsolutely livid and florrid in the face. It seems his church bible study classes had told him that Lot was Abraham's son. And who was I to tell him his minister was wrong?
I told him that an heir did not mean "child of", any rich Uncle Tonoose could leave you his fortune, but that didn't make him your father.