{The helmet of salvation} (	(886e) perikephalaian tou
s(9374)(8872)iou). Late word (peri, kephal(885c), head, around the head),
in Polybius, LXX,  1Th 5:8  Eph 6:17  alone in N.T. {Which is the
word of God} (ho estin to r(886d)a tou theou). Explanatory relative
(ho) referring to the sword (machairan). The sword given by
the Spirit to be wielded as offensive weapon (the others
defensive) by the Christian is the word of God. See  Heb 4:12 
where the word of God is called "sharper than any two-edged
sword."