Revelation 1:16
and he had in his right hand seven stars, and out of his mouth there went a sharp two-edged sword; and his countenance was as the sun, when he shines in his strength.
Revelation 2:16
Reform, or otherwise, I will come to you quickly, and I will fight against them with the sword of my mouth.
Revelation 12:11
And they have overcome him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives to the death.
Revelation 19:15
And there went out of his mouth a sharp sword, that with it he might smite the nations: and he shall govern them with a rod of iron; and he treads the wine press of the indignation and wrath of almighty God.