TOB 4:12

12 Beware of all whoredom, [my] son, and chiefly take a wife of the seed of thy fathers, and take not a strange [woman to] wife, which is not of thy father’s tribe: for we are the children of the prophets, Noe, Abraham, Isaac, and Jacob: remember, [my] son, [that] our fathers from the beginning, [even] that they all married wives of their own kindred, and were blessed in their children, and their seed shall inherit the land.