1 Samuel 11:9-12

9And they said to the messengers who came, “Thus you shall say to the men of Jabesh Gilead: ‘Tomorrow, by the time the sun is hot, you shall have help.’ ” Then the messengers came and reported it to the men of Jabesh, and they were glad.

10Therefore the men of Jabesh said, “Tomorrow we will come out to you, and you may do with us whatever seems good to you.”

11So it was, on the next day, that Saul put the people in three companies; and they came into the midst of the camp in the morning watch, and killed Ammonites until the heat of the day. And it happened that those who survived were scattered, so that no two of them were left together.

12Then the people said to Samuel, “Who is he who said, ‘Shall Saul reign over us?’ Bring the men, that we may put them to death.”