recesses of the earth;
[Literally, "hides under the ninth earth," which is a metaphor
indicating the utmost secrecy and concealment, so that the enemy may
not know his whereabouts."]
he who is skilled in attack flashes forth from the topmost heights of
heaven.
[Another metaphor, implying that he falls on his adversary like a
thunderbolt, against which there is no time to prepare. This is the
opinion of most of the commentators.]
Thus on the one hand we have ability to protect ourselves; on the
other, a victory that is complete.