3 Now Tobiah the Ammonite was by him, and he said, "What they are building, if a fox climbed up it, he would break down their stone wall."
*Minor differences ignored. Grouped by changes, with first version listed as example.
Now Tobiah the Ammonite was by him,.... Who was one of his brethren he spake before, Nehemiah 4:2,
and he said; in the like contemptuous and scoffing manner:
even that which they build, if a fox go up, he shall break down their stone wall; signifying not only that it was so low that a fox could easily get up to it, or leap over it; but that the materials were so bad, and the work so poorly done, that the weight of a fox would break it down; of which creatures many were thereabout, since Jerusalem was desolate, see Lamentations 5:18.
if a fox go up--The foxes were mentioned because they were known to infest in great numbers the ruined and desolate places in the mount and city of Zion (Lamentations 5:18).
(3:35)
Tobiah the Ammonite, standing near Sanballat, and joining in in his raillery, adds: "Even that which they build, if a fox go up he will break their stone wall;" i.e., even if they build up walls, the light footsteps of the stealthy fox will suffice to tread them down, and to make breaches in their work.
*More commentary available at chapter level.