'Two edged' in the Bible

And he had in his right hand seven stars, and out of his mouth went a sharp two-edged sword; and his countenance was as the sun shineth in his strength.

And to the angel of the church at Pergamos write, These things saith he who hath the sharp two-edged sword.

And out of his mouth goeth forth a sharp two-edged sword, that with it he may smite the nations. And he shall rule them with a rod of iron: and he treadeth the wine-press of the fierceness of the wrath of God, the Almighty.