Isaiah 21:5

If the setting for the prophecy was the embassy of Merodach-baladan, the people who set the table and provide a meal refers to the Judeans. They entertained representatives of the nation under divine judgment (Babylon) who, as they dined with the Judeans, planned war against them among themselves. [Note: Motyer, p. 175.] The Assyrians captured and destroyed Babylon in 686 B.C. Another possibility is that Isaiah saw a banquet in Babylon (cf. Daniel 5). The plan for battle would, in that case, be that of Babylon’s invading enemy, perhaps the Medes and Persians. [Note: Oswalt, p. 394; Archer, p. 624.]