'Persons' in the Bible

"Please speak in the ears of all the men of Shechem, 'Is it better for you that all the sons of Jerubbaal, who are seventy persons, 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, being seventy persons, on one stone: but Jotham the youngest son of Jerubbaal was left; for he hid himself.

and you have risen up against my father's house this day, and have slain his sons, seventy persons, on one stone, and have made Abimelech, the son of his female servant, king over the men of Shechem, because he is your brother);

The men of Israel turned in the battle, and Benjamin began to strike and kill of the men of Israel about thirty persons; for they said, "Surely they are struck down before us, as in the first battle."