The Catechism of the Catholic Church
Paragraphs 127-130
The Canon of Scripture

127 The fourfold Gospel holds a unique place in the Church, as is evident both in the veneration which the liturgy accords it and in the surpassing attraction it has exercised on the saints at all times: There is no doctrine which could be better, more precious and more splendid than the text of the Gospel. Behold and retain what our Lord and Master, Christ, has taught by his words and accomplished by his deeds.

But above all it's the gospels that occupy my mind when I'm at prayer; my poor soul has so many needs, and yet this is the one thing needful. I'm always finding fresh lights there; hidden meanings which had meant nothing to me hitherto.

The unity of the Old and New Testaments
128 The Church, as early as apostolic times, and then constantly in her Tradition, has illuminated the unity of the divine plan in the two Testaments through typology, which discerns in God's works of the Old Covenant prefigurations of what he accomplished in the fullness of time in the person of his incarnate Son.​​​​​​​

129 Christians therefore read the Old Testament in the light of Christ crucified and risen. Such typological reading discloses the inexhaustible content of the Old Testament; but it must not make us forget that the Old Testament retains its own intrinsic value as Revelation reaffirmed by our Lord himself. Besides, the New Testament has to be read in the light of the Old. Early Christian catechesis made constant use of the Old Testament. As an old saying put it, the New Testament lies hidden in the Old and the Old Testament is unveiled in the New.

130 Typology indicates the dynamic movement toward the fulfilment of the divine plan when "God [will] be everything to everyone." Nor do the calling of the patriarchs and the exodus from Egypt, for example, lose their own value in God's plan, from the mere fact that they were intermediate stages

"Feed My Sheep" by Yongsung Kim