John Trapp on Revelation 16:12

Verſe 12. Ʋpon the great river Euphrates] i. e. Upon whatſoever yet hindereth the deſtruction of ſpirituall Babylon, and the comming in of the Jews; as the Turkiſh Empire, &c.

That the way of the Kings] Chriſtians, ſay ſome, who are Kings in righteouſneſſe, and come from the Eaſt, or from Chriſt, That day-spring from on high, Luk. 1.78. Others underſtand this Text of the Jews, who are moſt of them in the Eaſt, diſperſed thorow Turkie, Tartary (the ten Tribes eſpecially) and China. Junius ſaith, Tartars, of Tothar, a remnant or reſidue That which is called the land of Sinim, Iſa. 49.12. may probably be meant of China: which, if it be the meaning, there may be many of the Jews, whoſe converſion we daily expect and pray for. See Iſa. 11.15, 16. Zach. 10.10, 11.