After the completion of the New Testament, the church fathers developed theology in their increasingly Gentile post-apostolic church in such a way that many of the distinctively Jewish features of the NT’s use of the OT diminished. However, this was not the case with regard to the Christocentric interpretation of the OT that was so central to how the NT writers interpreted the OT. As noted historian, Robert Wilken, has noted, the early church fathers didn’t consider the original meaning of OT passages to be altogether irrelevant, but they did consider it merely “preparatory” for the fuller meaning of passages that was unlocked when they were read in the light of Christ. The distinctly “Christian understanding” of Scripture was for them “oriented toward the living Christ revealed through the words of the Bible…”
For these believers, writes Denis Farkasfalvy, “Jewish holy books function and are interpreted as documents of a Christ-centered salvation history with its full and true meaning apparent only in the light of the Church’s faith in Christ.” Indeed, according to Claire McGinnis, “[n]ot only did the NT serve as the key to understanding the Old” for these fathers, but the uniform assumption of interpreters during this period was that “the books of the Old were about Christ.” Following the precedent of the NT, these fathers understood Christ to be the fulfillment of fundamental OT motifs as well as of specific OT prophecies.
Following this precedent, these fathers relied on typological as well as allegorical interpretive strategies to discern Christ in the OT. It was by this means that Origen, Gregory of Nyssa, John Cassian and others were able to discern how violent portraits of God in the OT bore witness to Christ, as argued in The Crucifixion of the Warrior God.
By means of creative Christocentric interpretive strategies such as these, the Bible became for these interpreters “a vast field of interrelated words, all speaking about the same reality, the one God revealed in Christ,” as Wilken notes. The central goal of early Christian interpreters, he continues, was “to find Christ in surprising and unexpected places.”  And it was primarily by this means that the early Church was able to continue to embrace the OT as its own.
 R. L. Wilken, “Interpreting the Old Testament,” Isaiah: Interpreted by Early Christian and Medieval Commentators, trans. and ed. R. L. Wilken, A, R. Christman, and J. Hollerich; The Church’s Bible, xvii.
 Denis Farkasfalvy, Inspiration and Interpretation, 23.
 Claire McGinnis. “Stumbling over the Testaments: On Reading Patristic Exegesis and the Old Testament in Light of the New,” Journal of Theological Interpretation (April, 2010), 15-31.
 Wilken, “Interpreting the Old Testament,” xviii.