Joshua 15:11
And the border went out unto the side of Ekron northward: and the border was drawn to Shicron, and passed along to mount Baalah, and went out unto Jabneel; and the goings out of the border were at the sea.
Cross-reference
Joshua 15:45
Parallel
In Joshua 15:45, Ekron is listed among Judah's cities, matching its boundary mention in verse 11.
1 Samuel 7:14
Historical context
1 Samuel 7:14 records the restoration of cities from Ekron to Gath, referencing the same border city as here.