(מז) וְשָׁא֛וּל לָכַ֥ד הַמְּלוּכָ֖ה עַל־יִשְׂרָאֵ֑ל וַיִּלָּ֣חֶם סָבִ֣יב ׀ בְּֽכָל־אֹיְבָ֡יו בְּמוֹאָ֣ב ׀ וּבִבְנֵי־עַמּ֨וֹן וּבֶאֱד֜וֹם וּבְמַלְכֵ֤י צוֹבָה֙ וּבַפְּלִשְׁתִּ֔ים וּבְכֹ֥ל אֲשֶׁר־יִפְנֶ֖ה יַרְשִֽׁיעַ׃ (מח) וַיַּ֣עַשׂ חַ֔יִל וַיַּ֖ךְ אֶת־עֲמָלֵ֑ק וַיַּצֵּ֥ל אֶת־יִשְׂרָאֵ֖ל מִיַּ֥ד שֹׁסֵֽהוּ׃ (ס) (מט) וַיִּֽהְיוּ֙ בְּנֵ֣י שָׁא֔וּל יוֹנָתָ֥ן וְיִשְׁוִ֖י וּמַלְכִּי־שׁ֑וּעַ וְשֵׁם֙ שְׁתֵּ֣י בְנֹתָ֔יו שֵׁ֤ם הַבְּכִירָה֙ מֵרַ֔ב וְשֵׁ֥ם הַקְּטַנָּ֖ה מִיכַֽל׃ (נ) וְשֵׁם֙ אֵ֣שֶׁת שָׁא֔וּל אֲחִינֹ֖עַם בַּת־אֲחִימָ֑עַץ וְשֵׁ֤ם שַׂר־צְבָאוֹ֙ אֲבִינֵ֔ר בֶּן־נֵ֖ר דּ֥וֹד שָׁאֽוּל׃ (נא) וְקִ֧ישׁ אֲבִֽי־שָׁא֛וּל וְנֵ֥ר אֲבִֽי־אַבְנֵ֖ר בֶּן־אֲבִיאֵֽל׃ (ס) (נב) וַתְּהִ֤י הַמִּלְחָמָה֙ חֲזָקָ֣ה עַל־פְּלִשְׁתִּ֔ים כֹּ֖ל יְמֵ֣י שָׁא֑וּל וְרָאָ֨ה שָׁא֜וּל כָּל־אִ֤ישׁ גִּבּוֹר֙ וְכָל־בֶּן־חַ֔יִל וַיַּאַסְפֵ֖הוּ אֵלָֽיו׃ (ס)
(47) After Saul had secured his kingship over Israel, he waged war on every side against all his enemies: against the Moabites, Ammonites, Edomites, the Philistines, and the kings of Zobah; and wherever he turned there were those who wants to harm him (48) He was triumphant, defeating the Amalekites and saving Israel from those who plundered it. (49) Saul’s sons were: Jonathan, Ishvi, and Malchishua; and the names of his two daughters were Merab, the older, and Michal, the younger. (50) The name of Saul’s wife was Ahinoam daughter of Ahimaaz; and the name of his army commander was Abiner son of Saul’s uncle Ner. (51) Kish, Saul’s father, and Ner, Abner’s father, were sons of Abiel. (52) There was bitter war against the Philistines all the days of Saul; and whenever Saul noticed any stalwart man or warrior, he would take him into his service.
(1) At that time the Philistines mustered their forces for war, to take the field against Israel. Achish said to David, “You know, of course, that you and your men must march out with my forces.” (2) David answered Achish, “You surely know what your servant will do.” “In that case,” Achish replied to David, “I will appoint you my bodyguard for life.” (3) Now Samuel had died and all Israel made lament for him; and he was buried in his own town of Ramah. And Saul had forbidden [recourse to] ghosts and familiar spirits in the land. (4) The Philistines mustered and they marched to Shunem and encamped; and Saul gathered all Israel, and they encamped at Gilboa. (5) When Saul saw the Philistine force, his heart trembled with fear. (6) And Saul inquired of the LORD, but the LORD did not answer him, either by dreams or by Urim or by prophets. (7) Then Saul said to his courtiers, “Find me a woman who consults ghosts, so that I can go to her and inquire through her.” And his courtiers told him that there was a woman in En-dor who consulted ghosts. (8) Saul disguised himself; he put on different clothes and set out with two men. They came to the woman by night, and he said, “Please divine for me by a ghost. Bring up for me the one I shall name to you.” (9) But the woman answered him, “You know what Saul has done, how he has banned [the use of] ghosts and familiar spirits in the land. So why are you laying a trap for me, to get me killed?” (10) Saul swore to her by the LORD: “As the LORD lives, you won’t get into trouble over this.” (11) At that, the woman asked, “Whom shall I bring up for you?” He answered, “Bring up Samuel for me.” (12) Then the woman recognized Samuel, and she shrieked loudly, and said to Saul, “Why have you deceived me? You are Saul!” (13) The king answered her, “Don’t be afraid. What do you see?” And the woman said to Saul, “I see a divine being coming up from the earth.” (14) “What does he look like?” he asked her. “It is an old man coming up,” she said, “and he is wrapped in a robe.” Then Saul knew that it was Samuel; and he bowed low in homage with his face to the ground. (15) Samuel said to Saul, “Why have you disturbed me and brought me up?” And Saul answered, “I am in great trouble. The Philistines are attacking me and God has turned away from me; He no longer answers me, either by prophets or in dreams. So I have called you to tell me what I am to do.” (16) Samuel said, “Why do you ask me, seeing that the LORD has turned away from you and has become your adversary? (17) The LORD has done for Himself as He foretold through me: The LORD has torn the kingship out of your hands and has given it to your fellow, to David, (18) because you did not obey the LORD and did not execute His wrath upon the Amalekites. That is why the LORD has done this to you today. (19) Further, the LORD will deliver the Israelites who are with you into the hands of the Philistines. Tomorrow your sons and you will be with me; and the LORD will also deliver the Israelite forces into the hands of the Philistines.”
Since David knew Achich's intentions (and in reality, this was good for him because he couldn't fathom fighting against Israel), and therefore he acted emotionless, saying "you know what your servant will do", indicating that Achish didn't need to hear anything said explicitly, as he knew from prior experience of David's valiancy.
(1) The Philistines attacked Israel, and the men of Israel fled before the Philistines and [many] fell on Mount Gilboa. (2) The Philistines pursued Saul and his sons, and the Philistines struck down Jonathan, Abinadab, and Malchishua, sons of Saul. (3) The battle raged around Saul, and some of the archers hit him, and he was severely wounded by the archers. (4) Saul said to his arms-bearer, “Draw your sword and run me through, so that the uncircumcised may not run me through and make sport of me.” But his arms-bearer, in his great awe, refused; whereupon Saul grasped the sword and fell upon it. (5) When his arms-bearer saw that Saul was dead, he too fell on his sword and died with him. (6) Thus Saul and his three sons and his arms-bearer, as well as all his men, died together on that day.
(7) And when the men of Israel on the other side of the valley and on the other side of the Jordan saw that the men of Israel had fled and that Saul and his sons were dead, they abandoned the towns and fled; the Philistines then came and occupied them. (8) The next day the Philistines came to strip the slain, and they found Saul and his three sons lying on Mount Gilboa. (9) They cut off his head and stripped him of his armor, and they sent them throughout the land of the Philistines, to spread the news in the temples of their idols and among the people. (10) They placed his armor in the temple of Ashtaroth, and they impaled his body on the wall of Beth-shan. (11) When the inhabitants of Jabesh-gilead heard about it—what the Philistines had done to Saul— (12) all their stalwart men set out and marched all night; they removed the bodies of Saul and his sons from the wall of Beth-shan and came to Jabesh and burned them there. (13) Then they took the bones and buried them under the tamarisk tree in Jabesh, and they fasted for seven days.