'Mouth of the Lord' in the Bible

But if ye refuse and rebel, ye shall be devoured with the sword: for the mouth of the LORD hath spoken it.

And the glory of the LORD shall be revealed, and all flesh together shall see it: for the mouth of the LORD hath spoken it.

Then shalt thou delight thyself in the LORD; and I will cause thee to ride upon the high places of the earth, and feed thee with the heritage of Jacob thy father: for the mouth of the LORD hath spoken it.

And the Gentiles shall see thy righteousness, and all kings thy glory: and thou shalt be called by a new name, which the mouth of the LORD shall name.