[147] And this is why he only says that he will give her one son. And now he has called it a son, not speaking carelessly or inconsiderately, but for the sake of showing that it is not a foreign, nor a supposititious, nor an adopted, nor an illegitimate child, but a legitimate child, a proper citizen, inasmuch as a foreign child cannot be the offspring of a truly citizen soul, for the Greek word τέκνον (son), is derived from τόκος (bringing forth), by way of showing the kindred by which children are, by nature, united to their parents.