'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: arid his face was as the sun when it shines in its strength.

And to the angel of the church in Pergamos, write: These things says he that has the sharp, two-edged sword;

And out of his mouth goes 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 treads the wine-press of the fiercest wrath of God, the Almighty.