1 Samuel 14:47-15:9 (HCSB)
When Saul assumed the kingship over Israel, he fought against all his enemies in every direction: against Moab, the Ammonites, Edom, the kings of Zobah, and the Philistines. Wherever he turned, he caused havoc. He fought bravely, defeated the Amalekites, and delivered Israel from the hand of those who plundered them.
Saul’s sons were Jonathan, Ishvi, and Malchishua. The names of his two daughters were: Merab, his firstborn, and Michal, the younger. The name of Saul’s wife was Ahinoam daughter of Ahimaaz. The name of the commander of his army was Abner son of Saul’s uncle Ner. Saul’s father was Kish. Abner’s father was Ner son of Abiel.
The conflict with the Philistines was fierce all of Saul’s days, so whenever Saul noticed any strong or brave man, he enlisted him.
Samuel told Saul, “The Lord sent me to anoint you as king over His people Israel. Now, listen to the words of the Lord. This is what the Lord of Hosts says: ‘I witnessed what the Amalekites did to the Israelites when they opposed them along the way as they were coming out of Egypt. Now go and attack the Amalekites and completely destroy everything they have. Do not spare them. Kill men and women, children and infants, oxen and sheep, camels and donkeys.’”
Then Saul summoned the troops and counted them at Telaim: 200,000 foot soldiers and 10,000 men from Judah. Saul came to the city of Amalek and set up an ambush in the wadi. He warned the Kenites, “Since you showed kindness to all the Israelites when they came out of Egypt, go on and leave! Get away from the Amalekites, or I’ll sweep you away with them.” So the Kenites withdrew from the Amalekites.
Then Saul struck down the Amalekites from Havilah all the way to Shur, which is next to Egypt. He captured Agag king of Amalek alive, but he completely destroyed all the rest of the people with the sword. Saul and the troops spared Agag, and the best of the sheep, cattle, and choice animals, as well as the young rams and the best of everything else. They were not willing to destroy them, but they did destroy all the worthless and unwanted things.