Contradiction with 1 Chronicles 11:15
This verse mentions that the three mighty men came to David to the rock to David in the cave of Adullam, while the host of the Philistines encamped in the valley of Rephaim, which contradicts the specific timing and location mentioned in 2 Samuel 23:13.
1 Chronicles 11:15: Now three of the thirty captains went down to the rock to David, into the cave of Adullam; and the host of the Philistines encamped in the valley of Rephaim. [three...: or, three captains over the thirty]
Paradox #1
2 Samuel 23:13 mentions three of David's warriors going to him at the cave of Adullam. A potential contradiction is that the account appears similar but not identical to another story in 1 Chronicles 11:15-19. The details and circumstances vary slightly, which suggests a possible inconsistency in the retelling of the event.