2nd Kings 10:1

1 Now there were in Samaria seventy of Ahab's sons. And Jehu sent letters to Samaria, to the rulers of the town, and to the responsible men, and to those who had the care of the sons of Ahab, saying,

2 Straight away, when you get this letter, seeing that your master's sons are with you, and that you have carriages and horses and a walled town and arms;

3 Take the best and most upright of your master's sons, and make him king in his father's place, and put up a fight for your master's family.

4 But they were full of fear, and said, The two kings have gone down before him: how may we keep our place?

5 So the controller of the king's house, with the ruler of the town, and the responsible men, and those who had the care of Ahab's sons, sent to Jehu, saying, We are your servants and will do all your orders; we will not make any man king; do whatever seems best to you.

6 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.

7 And when the letter came to them, they took the king's sons and put them to death, all the seventy, and put their heads in baskets and sent them to him at Jezreel.