these are the generations - history of the leading men and events (compare Gen 2:4).
Esau who is Edom - A name applied to him in reference to the peculiar color of his skin at birth [Gen 25:25], rendered more significant by his inordinate craving for the red pottage [Gen 25:30], and also by the fierce sanguinary character of his descendants (compare Eze 25:12; Oba 1:10).