I will bring a nation - The Scythians, says Dahler; the Babylonians, whose antiquity was great, that empire being founded by Nimrod.
Whose language thou knowest not - The Chaldee, which, though a dialect of the Hebrew, is so very different in its words and construction that in hearing it spoken they could not possibly collect the meaning of what was said.
Israel is not put here for the ten tribes, but for the whole house of Jacob, of which Judah was now the representative.
Mighty - “permanent, enduring.” The word is the usual epithet of the rocks Numbers 24:21, and of ever-flowing streams Deuteronomy 21:4, Hebrew). It describes therefore a nation, whose empire is firm as a rock, and ever rolling onward like a mighty river. The epithet “ancient” refers simply to time.
Whose laguage thou knowest not - This would render them more pitiless, as they would not understand their cries for mercy.