Matthew Poole and continuators on Haggai 2:22

22 And I will overthrow the throne of kingdoms , and I will destroy the strength of the kingdoms of the heathen, and I will overthrow the chariots and those that ride in them, and the horses and their riders shall come down, every one by the sword of his brother .

Now Babylonians are subjected to the Persian Power, and this standeth on the strength of many Kingdoms, and seems to be one Throne secured by all the Power of the known World, and can hardly be hoped to be hereafter better than an Enemy, and Opposer of the Iews, and their restoring of the Worship of God; for comfort in this case here is foretold God's overthrowing them, in case they oppose.

This seems an explaining of the former, and a confirming it too. Though the Gentiles, of many Kingdoms united in all their strength, set to hinder this work, this shall succeed so contrary to their expectation, that not you, but they shall find destruction as the end thereof; which was verified in the successive ruin of the Persian, Graecian, and Syrian Kingdoms, all which opprest the Church, and were destroy'd for it.

This passage foreshews that God will, by suffering Civil Wars to arise among these Nations, ruine them by themselves, as in truth they did, now whilest those Commotions and overthrows perplex and hurt the Iews, yet they were an occasion sometimes of some respite to them; Their Enemies were engaged on other designs, and could not mind mischief to the Iews.