In "Jesus, Gnosis and Dogma" Roukema investigates and assesses the various views of Jesus in early Christianity, basing his approach on a distinction between historical and theological statements about Jesus. Historical statements can be arrived at through a critical study of the earliest records, although Roukema recognizes that scholars differ widely here. Theological statements about Jesus are to do with what has been and is believed about him.
Roukema demonstrates that Gnostic traditions about Jesus mostly derive from the earlier traditions preserved in the New Testament writings and do not give a more accurate view of the historical Jesus. He shows that the view of Jesus as the divine Lord (Yahweh) and Son of God is inspired by an early Jewish pattern that was exploited by the very first Christians. In spite of some later dogmatic precisions, there is more continuity between the New Testament picture of Jesus and the Nicene creed than between the historical Jesus and the Jesus of early Gnosticism. Even the essence of the Trinitarian dogma appears to have Jewish roots.

What happened when the writing of the Old Testament prophet Micah from the 8th century BCE was read and interpreted by Christians in the 1st to 5th century BCE? This research meticulously describes data from patristic commentaries and other ancient Christian works in Greek and Latin, as well as the remains of Gnostic receptions of Micah, and it analyses the interpretative strategies that were adopted. Attention is paid to the partial retrieval of Origen's Commentary on Micah, which is lost nowadays, but was used by later Christian authors, especially Jerome. This work includes the ancient delimitation of the Septuagint version and patristic observations on the meaning of particular terms. Other aspects are the liturgical readings from Micah's book up to the Middle Ages, its use in Christ's complaints about Israel on Good Friday (the Improperia), and a rabbinic tradition about Jesus quoting Micah. It is noted whenever patristic authors implicitly use or explicitly quote Jewish interpretations, many of which are supplied with parallels in contemporaneous or medieval Jewish works. This first comprehensive survey of the ancient Christian reception and interpretation of Micah is a valuable tool for Biblical scholars and historians.

In "Jesus, Gnosis and Dogma" Roukema investigates and assesses the various views of Jesus in early Christianity, basing his approach on a distinction between historical and theological statements about Jesus. Historical statements can be arrived at through a critical study of the earliest records, although Roukema recognizes that scholars differ widely here. Theological statements about Jesus are to do with what has been and is believed about him.
Roukema demonstrates that Gnostic traditions about Jesus mostly derive from the earlier traditions preserved in the New Testament writings and do not give a more accurate view of the historical Jesus. He shows that the view of Jesus as the divine Lord (Yahweh) and Son of God is inspired by an early Jewish pattern that was exploited by the very first Christians. In spite of some later dogmatic precisions, there is more continuity between the New Testament picture of Jesus and the Nicene creed than between the historical Jesus and the Jesus of early Gnosticism. Even the essence of the Trinitarian dogma appears to have Jewish roots.