'Two edged' in the Bible

Let the high praises of God be in their mouth, and a two-edged sword in their hand,

but afterward she is as bitter as wormwood, sharp as a two-edged sword.

For the Word of God is living and powerful and sharper than any two-edged sword, piercing even to the dividing apart of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.

And He had seven stars in His right hand, and out of His mouth went a sharp two-edged sword. And His face was like the sun shining in its strength.