Or maybe it refers to Revelations…
Behold the Sword of Truth.
Revelation 19:15, KJV: "And out of his mouth goeth a sharp sword, that with it he should smite the nations: and he shall rule them with a rod of iron: and he treadeth the winepress of the fierceness and wrath of Almighty God."
Revelation 1:16, NIV: "In his right hand he held seven stars, and coming out of his mouth was a sharp, double-edged sword. His face was like the sun shining in all its brilliance."