With the exception of a very few variations, the Moabite language in which the inscription is written is identical with the Hebrew. The form of the letters here used supplies very important and interesting information regarding the history of the formation of the alphabet, as well as, incidentally, regarding the arts of civilized life of those times in the land of Moab. This ancient monument, recording the heroic struggles of King Mesha with Omri and Ahab, was erected about 900 BC. Here "we have the identical slab on which the workmen of the old world carved the history of their own times, and from which the eye of their contemporaries read thousands of years ago the record of events of which they themselves had been the witnesses."
This article uses text from Easton Bible Dicionary of 1897