'Two edged' in the Bible

For the word of God is living and active, sharper than any two-edged sword, piercing even to the division of soul and spirit, of joints and marrow, and discerning the thoughts and intentions of the heart.

he held in his right hand seven stars, out of his mouth went a sharp two-edged sword, and his face was like the sun shining in its strength.

"And to the angel of the church in Pergamum write: 'These are the words of him who has the sharp two-edged sword: