The Ammonites threatened the Israelites of Jabesh Gilead with putting out the right eye of each of them before making them slaves. Upon hearing this, Saul, filled with the Holy Spirit, united Israel and Judah.
1Sa 11:8 When he numbered them in Bezek, the children of Israel were three hundred thousand, and the men of Judah thirty thousand.
1Sa 11:11 So 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.
Saul unites the troops of Israel