II Reis 10:7

7 When the letter arrived, these men took the princes and slaughtered all seventy of them. They put their heads in baskets and sent them to Jehu in Jezreel.

7 And it came to pass, when the letter came to them, that they took the king's sons, and slew them, even seventy persons, and put their heads in baskets, and sent them unto him to Jezreel.