Revelation 2:12

And to the angel of the Church in Pergamum, write These are the words of Him who holds the sharp two-edged sword.

Revelation 1:16

In his right hand he held seven stars; and out of mouth went a sharp, two-edged sword, and his face was as the sun shining in his 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 Pergamos and to Thyatira and Sardis and Philadelphia and Laodicea."

Revelation 2:16

Repent; if you do not I will very soon come to you, and will make war upon them with the sword of my mouth.

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, and who walks among the seven golden candlesticks.

Revelation 19:15

And there issues from his lips a sharp sword with which to smite the nations. He shall shepherd them with a rod of iron. And he treads the winepress of the passion of the anger of Almighty God.

Revelation 19:21

And the rest were slain with the sword of him who sat on the horse, that sword which issued from his lips. And all the birds gorged themselves 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, and who walks among the seven golden candlesticks.
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 Pergamos and to Thyatira and Sardis and Philadelphia and Laodicea."

Which hath

Revelation 2:16
Repent; if you do not I will very soon come to you, and will make war upon them with the sword of my mouth.
Revelation 1:16
In his right hand he held seven stars; and out of mouth went a sharp, two-edged sword, and his face was as the sun shining in his strength.
Revelation 19:15
And there issues from his lips a sharp sword with which to smite the nations. He shall shepherd them with a rod of iron. And he treads the winepress of the passion of the anger of Almighty God.