Revelation 2:12

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

Revelation 1:16

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.

Revelation 1:11

saying, "Write in a book what you see, and send it to the seven churches: to Ephesus and to Smyrna and to Pergamum and to Thyatira and to Sardis and to Philadelphia and to Laodicea."

Revelation 2:16

Repent therefore, or else I will soon come to you and will fight against them with the sword of my mouth.

Hebrews 4:12

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.

Revelation 2:1

"To the angel of the church in Ephesus write: 'These are the words of him who holds the seven stars in his right hand, who walks among the seven golden lampstands:

Revelation 19:15

From his mouth comes a sharp sword with which to strike down the nations, and he will rule them with a rod of iron; he treads the wine press of the fury of the wrath of God the Almighty.

Revelation 19:21

And the rest were killed with the sword that came from the mouth of him who sat on the horse, and all the birds were gorged with their flesh.

Treasury of Scripture Knowledge

Summary

And to the angel of the church in Pergamos write; These things saith he which hath the sharp sword with two edges;

Bible References

The angel

Revelation 2:1
"To the angel of the church in Ephesus write: 'These are the words of him who holds the seven stars in his right hand, who walks among the seven golden lampstands:
Revelation 1:11
saying, "Write in a book what you see, and send it to the seven churches: to Ephesus and to Smyrna and to Pergamum and to Thyatira and to Sardis and to Philadelphia and to Laodicea."

Which hath

Revelation 2:16
Repent therefore, or else I will soon come to you and will fight against them with the sword of my mouth.
Revelation 1:16
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.
Revelation 19:15
From his mouth comes a sharp sword with which to strike down the nations, and he will rule them with a rod of iron; he treads the wine press of the fury of the wrath of God the Almighty.
Hebrews 4:12
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.