5 Now there was Saul, coming behind the herd from the field; and Saul said, "What troubles the people, that they weep?" And they told him the words of the men of Jabesh. 6 Then the Spirit of God came upon Saul when he heard this news, and his anger was greatly aroused. 7 So he took a yoke of oxen and cut them in pieces, and sent them throughout all the territory of Israel by the hands of messengers, saying, "Whoever does not go out with Saul and Samuel to battle, so it shall be done to his oxen." And the fear of the Lord fell on the people, and they came out with one consent. 8 When he numbered them in Bezek, the children of Israel were three hundred thousand, and the men of Judah thirty thousand. 9 And 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. 10 Therefore the men of Jabesh said, "Tomorrow we will come out to you, and you may do with us whatever seems good to you." 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.
Matthew Henry's Commentary on 1 Samuel 11:5-11
Commentary on 1 Samuel 11:1-11
(Read 1 Samuel 11:1-11)
The first fruit of Saul's government was the rescue of Jabesh-gilead from the Ammonites. To save their lives, men will part with liberty, and even consent to have their eyes put out; is it then no wisdom to part with that sin which is as dear to us as our right eye, rather than to be cast into hell-fire? See the faith and confidence of Saul, and, grounded thereon, his courage and resolution. See also his activity in this business. When the Spirit of the Lord comes upon men, it will make them expert, even without experience. When zeal for the glory of God, and love for the brethren, urge men to earnest efforts, and when God is pleased to help, great effects may speedily be produced.