[T]he variety of quotations from Jewish scripture in early Christian writings, the frequency with which some texts are cited (for example, Ps. 2:7, 8:6, 110:1, Is. 8:14, and Jer. 31:31-34) and the remarkable similarities in the way they are juxtaposed, interpreted, and applied by different writers . . . Considering the evidence of the quotations themselves and the circumstances of the primitive church, the project of mining the scriptures for specific texts to underpin the Christian proclamation was probably a specialized endeavor. Such texts were neither numerous nor self-evident: many that were traditionally regarded as messianic in Judaism were not useful for Christianity, and many that were messianically construed by the primitive church had carried no such sense in Judaism. Thus the early Christian appeal to Jewish scripture was not a simple matter of discovering texts, but a textual enterprise requiring close reading and constructive interpretation and thus literary sophistication.
Harry Y. Gamble, Books and Readers in the Early Church, 26.
Note: The textual enterprise and literary sophistication of early Christianity was not an exercise that merely copy-and-pasted Judaism’s textual enterprise.