2 Samuel 1:6
And the young man that told him said, As I happened by chance upon mount Gilboa, behold, Saul leaned upon his spear; and, lo, the chariots and horsemen followed hard after him.
Cross-reference
In 2 Samuel 1:21, David curses Mount Gilboa — the mountain named here in the Amalekite's report, tying both verses to the same location.
2 Samuel 21:12 describes David retrieving Saul's bones from Beth-shan — a later consequence of the death reported here.
1 Samuel 28:4 sets the battle at Gilboa, the same battle the Amalekite describes here — direct narrative continuity.
1 Samuel 31:1 gives the parallel account of the battle on Mount Gilboa, matching the Amalekite's location and event.
1 Samuel 31:2-7 details Saul's actual death and his sons' fate — the Amalekite's story here is a contrasting false version of the same event.
1 Chronicles 10:1 repeats the battle account from 1 Samuel 31:1 — another parallel to the event the Amalekite claims to have witnessed.