2 Chronicles 13:21

"And he went unto his father's house at Ophrah, and slew his brethren the sons of Jerubbaal, being threescore and ten persons, upon one stone: notwithstanding yet Jotham the youngest son of Jerubbaal was left; for he hid himself."

"And he had thirty sons that rode on thirty ass colts, and they had thirty cities, which are called Havothjair unto this day, which are in the land of Gilead."

"And Rehoboam loved Maachah the daughter of Absalom above all his wives and his concubines: for he took eighteen wives, and threescore concubines; and begat twenty and eight sons, and threescore daughters."