This is the word of the LORD that came to Jeremiah the prophet concerning Elam at the beginning of the reign of Zedekiah king of Judah.
By Elam some interpreters understand Persia, and it is the most common opinion. I however think that the Elamites were not the same with the Persians; I should rather say that they were the Parthians, were it not that Luke, in Acts 2:9, makes them a distinct people from the Parthians.
This prophecy is dated in the beginning of Zedekiah's reign; it is probable that the other prophecies against the Gentiles, going before, were at the same time. The Elamites were the Persians, descended from Elam the son of Shem (Gen 10:22); yet some think it was only that part of Persia which lay nearest to the Jews which was called Elymais, and adjoined to Media-Elam...
Commenting on Jeremiah 49:34-39
The word of the Lord that came unto Jeremiah the prophet against Elam,.... The Persians, as it is commonly understood, who descended from Elam the son of Shem, Gen 10:22; according to Josephus (w); but rather the country of Elymais is here designed; which, though in the times of Cyrus, was added to, and made a part of, the Persian empire, yet was a country...