Zeruiah, David's sister (1Ch 2:16), and a brother of Joab, was afterwards a celebrated general of David, as was also his brother Joab (2Sa 16:9; 2Sa 18:2; 2Sa 21:17). Saul's spear was pressed (stuck) into the ground at his head, as a sign that the king was sleeping there, for the spear served Saul as a sceptre (cf. 1Sa 18:10).
Verses 8-11
When Abishai exclaimed, “God hath delivered thine enemy into thy hand: now will I pierce him with the spear into the ground with a stroke, and will give no second” (sc., stroke: the Vulgate rendering gives the sense exactly: et secundo non opus erit, there will be no necessity for a second), David replied, “Destroy him not; for who hath stretched out his hand against the anointed of the Lord, and remained unhurt?” נקּה, as in Exo 21:19; Num 5:31. He then continued (in 1Sa 26:10, 1Sa 26:11): “As truly as Jehovah liveth, unless Jehovah smite him (i.e., carry him off with a stroke; cf. 1Sa 25:38), or his day cometh that he dies (i.e., or he dies a natural death; 'his day' denoting the day of death, as in Job 14:6; Job 15:32), or he goes into battle and is carried off, far be it from me with Jehovah (מיהוה, as in 1Sa 24:7) to stretch forth my hand against Jehovah's anointed.” The apodosis to 1Sa 26:10 commences with חלילה, “far be it,” or “the Lord forbid,” in 1Sa 26:11. “Take now the spear which is at his head, and the pitcher, and let us go.”
Verse 12
They departed with these trophies, without any one waking up and seeing them, because they were all asleep, as a deep sleep from the Lord had fallen upon them. שׁאוּל מראשׁתי stands for שׁ ממראשׁתי, “from the head of Saul,” with מ dropped. The expression “a deep sleep of Jehovah,” i.e., a deep sleep sent or inflicted by Jehovah, points to the fact that the Lord favoured David's enterprise.
Verse 13
“And David went over to the other side, and placed himself upon the top of the mountain afar off (the space between them was great), and cried to the people,” etc. Saul had probably encamped with his fighting men on the slope of the ill Hachilah, so that a valley separated him from the opposite hill, from which David had no doubt reconnoitred the camp and then gone down to it (1Sa 26:6), and to which he returned after the deed was accomplished. The statement that this mountain was far off, so that there was a great space between David and Saul, not only favours the accuracy of the historical tradition, but shows that David reckoned far less
