1 Samuel 17:2
“And Saul and the men of Israel were gathered together, and pitched by the valley of Elah, and set the battle in array against the Philistines.”
Now the Philistines gathered together their armies to battle, and were gathered together at Shochoh, which belongeth to Judah, and pitched between Shochoh and Azekah, in Ephes–dammim.
And Saul and the men of Israel were gathered together, and pitched by the valley of Elah, and set the battle in array against the Philistines.
And the Philistines stood on a mountain on the one side, and Israel stood on a mountain on the other side: and there was a valley between them.
And there went out a champion out of the camp of the Philistines, named Goliath, of Gath, whose height was six cubits and a span.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“Now Saul, and they, and all the men of Israel, were in the valley of Elah, fighting with the Philistines.”
“And the priest said, The sword of Goliath the Philistine, whom thou slewest in the valley of Elah, behold, it is here wrapped in a cloth behind the ephod: if thou wilt take that, take it: for there is no other save that here. And David said, There is none like that; give it me.”
“And the priest said, The sword of Goliath the Philistine, whom thou slewest in the valley of Elah, behold, it is here wrapped in a cloth behind the ephod: if thou wilt take that, take it: for there is no other save that here. And David said, There is none like that; give it me.”
“And the children of Ammon came out, and put the battle in array before the gate of the city: and the kings that were come were by themselves in the field.”