Despite a century of study, researchers can agree on the decipherment of only a single phrase of Proto-Sinaitic script, a Middle Bronze Age alphabet dating to 1500 BCE. The Proto-Sinaitic script is one of two similar undeciphered scripts dated to that period and believed to be ancestral to nearly all modern alphabets. Many experts believe the language of Proto-Sinaitic inscriptions is Semitic, and cite the one phrase that was interpreted as proof of this hypothesis. What is the phrase? Discuss