Eldad said that the Jews of his own kingdom descended from the tribe of Dan (which included the Biblical war-hero Samson) who had fled the civil war in the Kingdom of Israel between Solomon's son Rehoboam and Jeroboam the son of Nebat, and resettled in Egypt. From there, they moved southwards up the Nile into Ethiopia. The Beta Israel say this confirms that they are descended from these Danites. Some Beta Israel, however, assert that their Danite origins go back to the time of Moses, when some Danites parted from other Jews right after the Exodus and moved south to Ethiopia. Eldad the Danite speaks of at least three waves of Jewish immigration into his region, creating other Jewish tribes and kingdoms. The earliest wave settled in a remote kingdom of the "tribe of Moses": this was the strongest and most secure Jewish kingdom of all, with farming villages, cities and great wealth. Other Ethiopian Jews who appeared in the Mediterranean world over the succeeding centuries and persuaded rabbinic authorities there that they were of Jewish descent, and so could if slaves be ransomed by Jewish communities, join synagogues, marry other Jews, etc, also referred to the Mosaic and Danite origins of Ethiopian Jewry. The Mosaic claims of the Beta Israel, in any case, like those of the Zagwe dynasty, are ancient.