The Scriptures are one book in
Christ
"In the beginning was the Word, and the Word was with God,
and the Word was God." - John 1:1
"If one carefully reads the Scriptures, he will find there the word on
the subject of Christ -- de Christo sermonem -- and the prefiguration
of the new calling. He is indeed the hidden treasure in the field
-- the field in fact is the world -- but in truth, the hidden treasure
in the Scriptures is Christ. Because he is designed by types and
words that humanly are not possible to understand before the accomplishment
of all things, that is, Christ's parousia (coming)."
- Irenaeus, Adversus Haereses, c. 140-200
"Every part of Holy Writ announces through words the coming of Our Lord
Jesus Christ, reveals it through facts and establishes it through examples.
..For it is our Lord who during all the present age, through true and manifest
adumbrations, generates, cleanses, sanctified, chooses, separates, or redeems
the Church in the Patriarchs, through Adam's slumber, Noah's flood, Melchizedek's
blessing, Abraham's justification, Isaac's birth, and Jacob's bondage."
- Hilary of Poitiers, written around 350 AD
“You recall that one and the same Word of God extends throughout Scripture,
that it is one and the same Utterance that resounds in the mouths of all
the sacred writers, since he who was in the beginning God with God has
no need of separate syllables; for he is not subject to time.”
- Augustine of Hippo, 5th century
“All sacred Scripture is but one book, and that one book is
Christ, because divine Scripture speaks of Christ, and all divine
Scripture is fulfilled in Christ.”
- Hugh of St. Victor, 12th century