This thesis gathers and analyzes Origen of Alexandria's citations of Romans, 2 Corinthians and Galatians in order to gain a better understanding of the nature of the New Testament text in the second and third centuries. Throughout the transmission process of Origen’s writings, it is possible that the wording of his citations has undergone alteration that relates to changes in the New Testament transmission. Origen’s citations are analyzed to determine whether his citations, as they are found today, first transmit the text quoted by the author, and, second, are likely to be a reflection of his biblical manuscripts. If Origen’s authorial citations can be demonstrated to be from his biblical exemplars, it is only then that his citational text can be compared with New Testament manuscripts for the purposes of establishing textual affinity. If Origen’s citations cannot be used to establish his biblical text, then his use as a witness to specific text-forms should be reconsidered. However, his citations still reveal the transmission history of his writings, specifically how they have undergone alteration in light of the historical and theological environments of his editors. The thesis concludes that Origen, despite often corresponding to the Initial text and Byzantine text agreements, cited freely with little extant manuscript support. This suggests that his authorial citations have been accommodated to a text form similar to that of the Initial text and then the Byzantine text through subsequent transmission.