Verse 17 interprets itself as to the meaning of the sword of the Spirit—it is the Word of God. While all the other pieces of spiritual armor are defensive in nature, the sword of the Spirit is the only offensive weapon in the armor of God.
Ipinaliwanag ng mismong talata 17 ang kahulugan ng tabak ng Espiritu - na walang iba kundi ang Salita ng Diyos.