tn The MT does not have the name “Euphrates” in the text. It is supplied in the margin (Qere) as one of ten places where the Masoretes believed that something was “to be read although it was not written” in the text as they had received it. The ancient versions (LXX, SyriacPeshitta, Vulgate) include the word. See also the parallel text in 1 Chr 18:3.