Hebrews 4:12

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

Revelation 1:16

and having in His right hand seven stars; and a sharp, two-edged sword proceeding out of His mouth; and His countenance was as the sun shining in his power.

Revelation 2:12

"And to the angel of the assembly in Pergamum write these things," saith He Who hath the sharp, two-edged sword:

Treasury of Scripture Knowledge

Summary

But Ehud made him a dagger which had two edges, of a cubit length; and he did gird it under his raiment upon his right thigh.

Bible References

Two edges

Hebrews 4:12
For the word of God is living, and effectual, and sharper than any two-edged sword, and piercing even to a dividing of soul and spirit, of both joints and marrow, and is a discerner of the thoughts and intents of the heart.
Revelation 1:16
and having in His right hand seven stars; and a sharp, two-edged sword proceeding out of His mouth; and His countenance was as the sun shining in his power.
Revelation 2:12
"And to the angel of the assembly in Pergamum write these things," saith He Who hath the sharp, two-edged sword: