CCC 128 The Church, as early as apostolic times,1 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.
1 Cf. I Cor 10:6, 11; Heb 10:l; l Pt 3:21.