'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.

See what is recorded in the book of the Lord: all these will be there, not one without the other: the mouth of the Lord has given the order, and his spirit has made them come together.

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