That is plain enough. Hebrew means "one who is from across the river." Rivers were often the boundaries of ancient nations, and one from across the river meant, simply, an alien. In every country of the ancient world, the Hebrews were known as aliens. The word also, in popular usage, meant "one who should not be trusted until he has identified himself." Hebrew in all ancient literature was written as "Habiru". This word appears frequently in the Bible and in Egyptian literature. In the Bible, Habiru is used interchangeably with "sa-gaz", meaning "cutthroat". In all of Egyptian literature, wherever the word Habiru appears, it is written with the word "sa-gaz" written beside it. Thus the Egyptians always wrote of the Jews as "the cutthroat bandits from across the river". For five thousand years, the Egyptian scribes identified the Jews in this manner. Significantly, they are not referred to except by these two characters. The great Egyptian scholar, C. J. Gadd, noted in his book, The Fall of Nineveh, London, 1923, "Habiru is written with an ideogram. . . sa-gaz. . . signifying 'cut-throats'."

In the Bible, wherever the word Habiru, meaning the Hebrews, appears, it is used to mean bandit or cutthroat. Thus, in Isaiah 1:23, "Thy princes are rebellious, and companions of thieves," the word for thieves here is Habiru. Proverbs XXVIII:24 , "Whoso robbeth his father or his mother, and saith, 'It is no transgression; the same is the companion of a destroyer," sa-gaz is used here for destroyer, but the word destroyer also appears sometimes in the Bible as Habiru. Hosea VI:9 , "And as troops of robbers wait for a man, so the company of priests murder in the way by consent; for they commit lewdness." The word for robbers in this verse is Habiru.

(http://www.autoadmit.com/thread.php?thread_id=5197621&forum_id=2#45215749)