Charles H. Spurgeon on Psalms 125:2

As the mountains are round about Jerusalem, etc. The mountains most emphatically stand "round about Jerusalem", and in doing so must have greatly safeguarded it in ancient times. We are specially told that when Titus besieged the city, he found it impossible to invest it completely until he had built a wall round the entire sides of these mountains, nearly five miles long, with thirteen places at intervals in which he stationed garrisons, which added another mile and a quarter to these vast earthworks. "The whole was completed", says the Jewish historian, "in three days; so that what would naturally have required some months was done in so short an interval as is incredible." (Josephus. Wars of the Jews. Book 5, ch. 7, section 2.) Assaults upon the city, even then, could only be delivered effectively upon its level corner to the north west, whence every hostile advance was necessarily directed in all its various sieges. To those familiar with these facts, beautifully bold, graphic, and forceful is the Psalmist's figure of the security of the Lord's people —

"The mountains are round about Jerusalem;

And Jehovah is round about his people,

Henceforth, even for evermore."

These words must have been in Hebrew ears as sublime as they were comforting, and, when sung on the heights of Zion, inspiring in the last degree. —James Neil.