John Gills Exposition of the Bible Commentary - Isaiah 21:6
For thus hath the Lord said unto me ,.... This is a confirmation of the above prophecy from the Lord himself, he showing to the prophet, in a visionary way, the ruin of Babylon, and the means and instruments of it: go, set a watchman ; not Habakkuk, as Jarchi; nor Urias, as the Septuagint; nor Jeremiah, as others; but himself, who, in a way of vision, represented a watchman on the walls of Babylon; and which was no way unsuitable to his character and office as a prophet: let him... read more
Matthew Henry's Complete Commentary - Isaiah 21:1-10
We had one burden of Babylon before (Isa. 13:1-22); here we have another prediction of its fall. God saw fit thus to possess his people with the belief of this event by line upon line, because Babylon sometimes pretended to be a friend to them (as Isa. 39:1), and God would hereby warn them not to trust to that friendship, and sometimes was really an enemy to them, and God would hereby warn them not to be afraid of that enmity. Babylon is marked for ruin; and all that believe God's prophets... read more