6 So on that day Achish gave him Ziklag, and it has belonged to the kings of Judah ever since.

Read 1 Samuel 27:6 Using Other Translations

Then Achish gave him Ziklag that day: wherefore Ziklag pertaineth unto the kings of Judah unto this day.
So that day Achish gave him Ziklag. Therefore Ziklag has belonged to the kings of Judah to this day.
So Achish gave him the town of Ziklag (which still belongs to the kings of Judah to this day),