WordOfHisMouth

And all bare him Witness, and wondered at the Gracious Words which proceeded out of his Mouth. And they said, Is not this Joseph's Son? - Luk 4:22

Jesus Spoke with the Grace, Power and Authority of God.

And he had in his Right hand seven stars: and out of his Mouth went a sharp twoedged Sword: and his countenance was as the sun shines in his Strength. - Rev 1:16

The seven stars are ministers. Jesus Speaks the Word with precision and Power while His face is almost too bright to behold.

And out of his Mouth goes a sharp Sword, that with it he should strike the nations: and he shall Rule them with a Rod of iron: and he treads the winepress of the fierceness and Wrath of Almighty God. - Rev 19:15

And the remnant were slain with the Sword of him that Sat upon the horse, which Sword proceeded out of his Mouth: and all the fowls were Filled with their Flesh. - Rev 19:21

Everyone who fights against the Christ when He Returns will be slain by the Word Of His Power.