When Jehu was told that the heads of Ahab's descendants had been brought, he ordered them to be piled up in two heaps at the city gate and to be left there until the following morning.
When Jehu's letter was received, the leaders of Samaria killed all seventy of Ahab's descendants, put their heads in baskets, and sent them to Jehu at Jezreel.
In the morning he went out to the gate and said to the people who were there, “I was the one who plotted against King Joram and killed him; you are not responsible for that. But who killed all these?
it is not to remain there overnight. It must be buried the same day, because a dead body hanging on a post brings God's curse on the land. Bury the body, so that you will not defile the land that the Lord your God is giving you.