Jamieson, Fausset and Brown on Ezekiel 39:2

2. leave but the sixth part of thee--Margin, "strike thee with six plagues" (namely, pestilence, blood, overflowing rain, hailstones, fire, brimstone, Eze 38:22); or, "draw thee back with an hook of six teeth" (Eze 38:4), the six teeth being those six plagues. Rather, "lead thee about" [Ludovicus De Dieu and Septuagint]. As Antiochus was led (to his ruin) to leave Egypt for an expedition against Palestine, so shall the last great enemy of God be.

north parts--from the extreme north [Fairbairn].