Steve Ray has a list of 35 loaded Questions for "Bible Christians" (quotation marks his)(link to the whole list). This is number 1/35. I'm trying to provide the answers in a common format, for easy reference.
1) Where did Jesus give instructions that the Christian faith should be based exclusively on a book?
Nowhere that we know of.
1) But all of Jesus' instructions that we know of, we know of from a book.
2) And Jesus did confirm what was written in the books of Moses:
Deuteronomy 8:3 And he humbled thee, and suffered thee to hunger, and fed thee with manna, which thou knewest not, neither did thy fathers know; that he might make thee know that man doth not live by bread only, but by every word that proceedeth out of the mouth of the LORD doth man live.
Matthew 4:4 But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God.
Luke 4:4 And Jesus answered him, saying, It is written, That man shall not live by bread alone, but by every word of God.