2 Kings 10:6-8

New Century Version

⁶ Then Jehu wrote a second letter, saying, “If you are on my side and will obey me, cut off the heads of your master’s sons and come to me at Jezreel tomorrow about this time.”

Now the seventy sons of the king’s family were with the leading men of the city who were their guardians. ⁷ When the leaders received the letter, they took the king’s sons and killed all seventy of them. They put their heads in baskets and sent them to Jehu at Jezreel. ⁸ The messenger came to Jehu and told him, “They have brought the heads of the king’s sons.”

Then Jehu said, “Lay the heads in two piles at the city gate until morning.”