1 Samuel 11:7-8

And he took a yoke of oxen, and hewed them in pieces, and sent them throughout all the coasts of Israel by the hands of messengers, saying, Whosoever cometh not forth after Saul and after Samuel, so shall it be done unto his oxen. And the fear of the LORD fell on the people, and they came out with one consent. And when he numbered them in Bezek, the children of Israel were three hundred thousand, and the men of Judah thirty thousand.