Christology." New Testamental epistles Adoptionist theology may also be reflected in canonical epistles, the earliest of which pre-date the writing of the gospels. The letters of Paul the Apostle, for example, do not mention a virgin birth of Christ. Paul describes Jesus as "born of a woman, born under the law" and "as to his human nature was a descendant of David" in the Epistle to the Galatians and the Epistle to the Romans. Christian interpreters, however, take his statements in Philippians 2 to imply that Paul believed Jesus to have existed as equal to God before his incarnation. Shepherd of Hermas The 2nd-century work Shepherd of Hermas may also have taught that Jesus was a virtuous man filled with the Holy Spirit and adopted as the Son. While the Shepherd of Hermas was popular and sometimes bound with the canonical scriptures, it did not retain canonical status, if it ever had it. Theodotus of Byzantium Theodotus of Byzantium ( late 2nd century), a Valentinian Gnostic, was the most prominent exponent of adoptionism. According to Hippolytus of Rome (Philosophumena, VII, xxiii) Theodotus taught that Jesus was a man born of a virgin, according to the Council of Jerusalem, that he lived like other men, and was most pious. At his baptism in the Jordan the "Christ" came down upon the man Jesus, in the likeness of a dove (Philosophumena, VII, xxiii), but Jesus was not himself God until after his resurrection. Adoptionism was declared heresy at the end of the 3rd century and was rejected by the Synods of Antioch and the First Council of Nicaea, which defined the orthodox doctrine of the Trinity and identified the man Jesus with the eternally begotten Son or Word of God in the Nicene Creed. The belief was also declared heretical by Pope Victor I. Ebionites Adoptionism was also adhered to by the Jewish Christians known as Ebionites, who, according to Epiphanius in the 4th century, believed that Jesus was chosen on account of his sinless devotion to the will of God. The Ebionites were a Jewish Christian movement that existed during the early centuries of the Christian Era. They show strong similarities with the earliest form of Jewish Christianity, and their specific theology may have been a "reaction to the law-free Gentile mission." They regarded Jesus as the Messiah while rejecting his divinity and his virgin birth, and insisted on the necessity