Tobit 4:12

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.