2 Kings 10:6-8

6So he wrote them a second letter. It read, “If you are on my side and ready to listen to me, bring the heads of your master’s heirs to me in Jezreel about this time tomorrow.” The 70 male heirs were staying with the city’s most powerful men. These men had raised them.

7When the letter came to the men, they slaughtered all 70 heirs. They put the heads in baskets and sent them to Jehu in Jezreel.

8A messenger told him, “They’ve brought the heads of the king’s heirs.” Jehu said, “Put them in two piles at the entrance to the gateway until morning.”