1 Samuel 11:8-11

When Saul mobilized them at Bezek, he found that there were 300,000 men from Israel and 30,000 men from Judah. So Saul sent the messengers back to Jabesh-gilead to say, “We will rescue you by noontime tomorrow!” There was great joy throughout the town when that message arrived! The men of Jabesh then told their enemies, “Tomorrow we will come out to you, and you can do to us whatever you wish.” But before dawn the next morning, Saul arrived, having divided his army into three detachments. He launched a surprise attack against the Ammonites and slaughtered them the whole morning. The remnant of their army was so badly scattered that no two of them were left together.