The Greek adjective distomos literally means 'having two mouths' — from dis (twice) and stoma (mouth). It is used to describe a sword that is sharp on both edges, cutting in both directions. The term appears in Hebrews 4:12 and Revelation 1:16; 2:12 to describe the word of God and the sword of Christ.
The image of the two-edged sword is one of the New Testament's most powerful metaphors for Scripture's penetrating power. Hebrews 4:12 declares that the word of God is 'sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow.' No part of the inner person is hidden from it. In Revelation, the risen Christ has a sharp two-edged sword coming from His mouth — the word of judgment and salvation that proceeds from Him. The distomos sword cuts both ways: it wounds with conviction and heals with grace; it judges sin and declares righteousness.