Our pursuers were swifter than the eagles of the sky: They chased us on the mountains, they laid wait for us in the wilderness.
He mentions the ways they adopted, Through the mountains they pursued, and laid in wait in the desert. He means that every way of escape was closed up. For when enemies come, many hide themselves on mountains and thus escape; and others, betaking themselves to the desert, find there some hiding-places. But the Prophet says that such was the velocity of the Chaldeans, that the Jews in vain looked to the mountains or to deserts, for snares were everywhere prepared, and they were present everywhere to pursue them. Thus he confirms what he had said, that the time was fulfilled, for the Lord kept them shut up on every side. 