John Gill's Bible Commentary Ver. 6. And the young man that told him , etc.] So it seems he was, and therefore could not be Doeg, more likely his son of the two; but there is no reason to believe he was either of them, who cannot be thought to be well disposed to David: said, as I happened by chance upon Mount Gilboa ; who was either a traveller that came that way just as the army was routed, and part had fled to Gilboa; or if a soldier, was not one of those that attended Saul, and was of his bodyguard, but happened on the flight to come to the same spot on Gilboa where Saul was: behold, Saul leaned upon his spear ; that that might pierce him through and die; but this seems not true, for he fell upon his sword for that purpose, ( 1 Samuel 31:4); and, lo, the chariots and horsemen followed hard after him ; the charioteers and cavalry, of which part of the Philistine army consisted; though this also does not agree with the account in the above place; for according to that they were the archers that pressed him hard, and hit him.
Matthew Henry Commentary
Verses 1-10 - The blow which opened David's way to the throne was given about the time he had been sorely distressed. Those who commit their concerns to the Lord, will quietly abide his will. It shows that he desired no Saul's death, and he was not impatient to come to the throne.
Original Hebrew ויאמר559 הנער5288 המגיד5046 לו נקרא7122 נקריתי7136 בהר2022 הגלבע1533 והנה2009 שׁאול7586 נשׁען8172 על5921 חניתו2595 והנה2009 הרכב7393 ובעלי1167 הפרשׁים6571 הדבקהו׃1692