The point many miss is that the huge city itself [Khirbet Qeiyafa] is mute testament to a polity, to a government. Dating of the pottery has a huge consensus that it is the 10th century even without the olive pits [dated by C-14 to 1050-970 BCE]. Israel [Finkelstein, a famous low chronologist whose hypotheses minimalists like Jim West treat as manna from heaven] said, maybe it is Philistine? At an earlier session, excavators fresh from a summer of digging of Gath, Ashkelon, Timna; and earlier excavators of Ekron Timna and Lachish, agreed one after another, as Sy Gitin [HUC-JIR] said, “this is not a coastal assemblage!” While Zvi [Lederman] and Shlomo [Bunimovitz] of TA [Tel Aviv University] digging Bet Shemesh, nearby and also in Judah, said, “This is like our Level II to IV, early Iron Age.”
The above evidence is the reason the inscription is so important, regardless of what the inscription says, though the fact that it includes phrases and words like אל תעש , עבד, שפט and מלך is telling.