Without me - not having Me to “flee to” (Isa 10:3).
bow down - Bereft of strength they shall fall; or else, they shall lie down fettered.
under ... under - rather, “among” (literally, “in the place of”) [Horsley]. The “under” may be, however, explained, “trodden under the (feet of the) prisoners going into captivity,” and “overwhelmed under the heaps of slain on the battlefield” [Maurer].