_"At the mouth of two witnesses, or at the mouth of three witnesses,
shall the matter be established." Deut. xix. 15._

_"Whatsoever things were written aforetime were written for our
learning, that we through patience and comfort of the Scriptures might
have hope." Rom. xv. 4._

_"Now all these things happened unto them for ensamples; and they are
written for our admonition, upon whom the ends of the world are come." 1
Cor. x. 11._

_"My people shall know my name, therefore they shall know in that day
that I am he that doth speak, Behold, it is I." Isaiah lii. 6._


In the New Testament we have in the Gospels and the Epistles God's
teachings concerning the Old Testament. The writers of the New Testament
had the promise of our Lord that "The Comforter, who is the Holy Spirit,
whom the Father will send in my name, He shall teach you all things, and
bring all things to your remembrance, whatsoever I have said unto you."
(John xiv. 26.)

In the fulfillment of this promise they have given us the testimony of
God, the Holy Spirit, on all the subjects of which they have written.
What, therefore, is their testimony concerning the author of the book of
Isaiah? Did that prophet write the book, or is it a patched book from
various authors?

Matthew, the inspired author of the book that bears his name, quotes
from Isaiah xl. 3: "The voice of him that crieth in the wilderness,