A noteworthy characteristic of the Hebrew of the Biblical period is its uniform stability. All due allowance being made for scribal alterations whereby archaic passages may have been made more intelligible to later generations, the astounding fact still remains that throughout the many centuries during which the Old-Testament writings were produced the sacred language remained almost without perceptible change-a phenomenon of fixity which has no parallel in the history of any of our Western languages.
It is a significant point worth making that where a national group has a unified body of literature or one great book there is a stabilizing effect on the language and consequently a stabilizing effect on unification.
The Arabs had the Koran. The French had Les Miserables. The English had Shakespeare. The Greeks had Homer.
Etc. etc.
A language, a vocabulary that is ever-shifting is like a foundation of quicksand.
Look at Africa. All those dialects and they are practically a stoneage people.
China is an interesting case in point. The dynasty-centric progress was in flux because it surrounded the lifespans of personality. The so-called "sleeping giant" is ever swallowed up by ideology and the tyrant's hand. There is no core to its society other than indoctrination.
The Hebrew language was meat and potatoes unlike the Greek language which was rife with nuance, shades of gray and a toolbox for philosophy and science. Hebrew is best for poetry because the metaphor is fond of person, place and thing.