'Beyond the River' in the Bible

Then the king sent an answer to Rehum the chancellor, and to Shimshai the scribe, and to the rest of their companions that dwell in Samaria, and to the rest beyond the river, Peace, and at such a time.

There have also been mighty kings over Jerusalem, who have ruled over all countries beyond the river; and toll, tribute, and custom, was paid to them.

Now therefore, Tatnai governor beyond the river, Shethar-boznai, and your companions the Apharsachites, who are beyond the river, be ye far from thence:

Moreover, I make a decree what ye shall do to the elders of these Jews for the building of this house of God: that of the king's goods, even of the tribute beyond the river, forthwith expenses be given to these men, that they be not hindered.

And I, even I Artaxerxes the king, do make a decree to all the treasurers who are beyond the river, that whatever Ezra the priest, the scribe of the law of the God of heaven, shall require of you, it be done speedily,

And thou, Ezra, after the wisdom of thy God, that is in thy hand, set magistrates and judges, who may judge all the people that are beyond the river, all such as know the laws of thy God; and teach ye them that know them not.