All the persons belonging to Jacob who came into Egypt, who were his own offspring, not including the wives of his sons, were sixty-six persons in all.
Now Ahab had seventy sons in Samaria. So Jehu wrote letters and sent them to Samaria, to the rulers of Jezreel, to the elders, and to the guardians of the sons of Ahab, saying,
Did not one God make her? Both flesh and spirit are his. And what does the one God desire? Godly offspring. So look to yourselves, and do not let anyone be faithless to the wife of his youth.
And he must not acquire many wives for himself, or else his heart will turn away; also silver and gold he must not acquire in great quantity for himself.
He had thirty sons. He gave his thirty daughters in marriage outside his clan and brought in thirty young women from outside for his sons. He judged Israel seven years.
but you have risen up against my father's house this day, and have killed his sons, seventy men on one stone, and have made Abimelech, the son of his slave woman, king over the lords of Shechem, because he is your kinsman—
“Say in the hearing of all the lords of Shechem, ‘Which is better for you, that all seventy of the sons of Jerubbaal rule over you, or that one rule over you?’ Remember also that I am your bone and your flesh.”
He went to his father's house at Ophrah, and killed his brothers the sons of Jerubbaal, seventy men, on one stone; but Jotham, the youngest son of Jerubbaal, survived, for he hid himself.