'Seventy Sons' in the Bible

Now Gideon had seventy sons, his own offspring, for he had many wives.

Say now in the ears of all the townsmen of Shechem, Is it better for you to be ruled by all the seventy sons of Jerubbaal or by one man only? And keep in mind that I am your bone and your flesh.

Then he went to his father's house at Ophrah, and put his brothers, the seventy sons of Jerubbaal, to death on the same stone; however, Jotham, the youngest, kept himself safe by going away to a secret place.

that the violence done to the seventy sons of Jerubba'al might come and their blood be laid upon Abim'elech their brother, who slew them, and upon the men of Shechem, who strengthened his hands to slay his brothers.

And Ahab had seventy sons in Samaria. And Jehu wrote letters, and sent to Samaria, unto the rulers of Jezreel, to the elders, and to them that brought up Ahab's children, saying,

Then he sent them a second letter, saying, If you are on my side, and if you will do my orders, come to me at Jezreel by this time tomorrow, with the heads of your master's sons. Now the king's seventy sons were with the great men of the town, who had the care of them.