Zechariah 2:4

Walls. This must be understood of the spiritual Jerusalem, the Church of Christ. (Challoner) --- According to St. Augustine (in Psalm lxxi.) when the literal sense cannot be verified, we must have recourse to the thing prefigured; and thus what is here written, must be explained of the Church rather than of Jerusalem. (Worthington) --- A little before the fall of the latter, it was become so populous that the houses which had been built without the walls were enclosed. (Josephus, Jewish Wars vi. 6.) --- this multitude was a sort of pledge or figure of the crowds which should embrace the gospel.