Revelation 2:16

So, repent, or I will come to you quickly and will attack those people with the sword of my mouth.

2 Thessalonians 2:8

And then the lawless person [See verse 3] will be revealed, the one whom the Lord Jesus will destroy with the breath of His mouth and bring to an end by the brilliant appearance of His presence [i.e., at His second coming].

Revelation 2:5

So, remember where you have fallen from and repent [i.e., change your hearts and lives] and do the things you did at first [i.e., when you were first converted], or else I will come and remove your lampstand from its place [i.e., I will not permit the congregation to survive], unless you repent.

Revelation 1:16

And He had seven stars in His right hand [See verse 20], and a sharp, double-edged sword came out of His mouth. And His face [shone] as the sun, shining in [all] its brilliance.

Revelation 2:12

"And write [this] to the angel of the church at Pergamum: These are the words of Him who has the sharp double-edged sword:

Acts 17:30-31

Now God made allowance for the times when people were still uninformed [about His complete will], but now [in the Gospel age] He requires all people everywhere to repent [i.e., change their hearts and lives].

Ephesians 6:17

And take the helmet of salvation, and the sword of the Holy Spirit, which is God's word.

Revelation 2:21-22

And I gave her time to repent, but she refused to repent of her sexual immorality.

Revelation 3:19

"I rebuke and discipline those I love, so be earnest and repent.

Revelation 16:9

And people were seared by the intense heat, and they cursed the name of God, who had control over these judgments [i.e., the authority to inflict them], but they refused to repent and honor God. [See verse 2].

Revelation 19:15

And a sharp sword came out of His mouth, with which He would strike down the nations. And He will rule them with an iron staff and will trample on [the grapes of] God Almighty's winepress of anger.

Revelation 19:21

Then the rest of them [i.e., the kings and their armies. Verse 19] were killed with the sword that came out of the mouth of the One riding the horse. And all the birds gorged on their flesh.

Revelation 22:7

And listen, I [i.e., Christ] am coming quickly! The person who obeys the words of the prophecy of this book is blessed."

Treasury of Scripture Knowledge

Summary

Repent; or else I will come unto thee quickly, and will fight against them with the sword of my mouth.

Bible References

Else

Revelation 2:5
So, remember where you have fallen from and repent [i.e., change your hearts and lives] and do the things you did at first [i.e., when you were first converted], or else I will come and remove your lampstand from its place [i.e., I will not permit the congregation to survive], unless you repent.

Will fight

Revelation 2:12
"And write [this] to the angel of the church at Pergamum: These are the words of Him who has the sharp double-edged sword:
Revelation 1:16
And He had seven stars in His right hand [See verse 20], and a sharp, double-edged sword came out of His mouth. And His face [shone] as the sun, shining in [all] its brilliance.
Revelation 19:15
And a sharp sword came out of His mouth, with which He would strike down the nations. And He will rule them with an iron staff and will trample on [the grapes of] God Almighty's winepress of anger.
Ephesians 6:17
And take the helmet of salvation, and the sword of the Holy Spirit, which is God's word.
2 Thessalonians 2:8
And then the lawless person [See verse 3] will be revealed, the one whom the Lord Jesus will destroy with the breath of His mouth and bring to an end by the brilliant appearance of His presence [i.e., at His second coming].