very important teammates as fellow missionaries. While he was still fairly young, he was sent to Jerusalem to receive his education at the school of Gamaliel, one of the most noted teachers of Jewish law in history. Although modern scholarship agrees that Paul was educated under the supervision of Gamaliel in Jerusalem, he was not preparing to become a scholar of Jewish law, and probably never had any contact with the Hillelite school. Some of his family may have resided in Jerusalem since later the son of one of his sisters saved his life there. Nothing more is known of his biography until he takes an active part in the martyrdom of Stephen, a Hellenised diaspora Jew. Although it is known (from his biography and from Acts) that Paul could and did speak Aramaic (then known as "Hebrew"), modern scholarship suggests that Koine Greek was his first language. In his letters, Paul drew heavily on his knowledge of Stoic philosophy, using Stoic terms and metaphors to assist his new Gentile converts in their understanding of the Gospel and to explain his Christology. Persecutor of early Christians Paul says that prior to his conversion, he persecuted early Christians "beyond measure", more specifically Hellenised diaspora Jewish members who had returned to the area of Jerusalem. According to James Dunn, the Jerusalem community consisted of "Hebrews", Jews speaking both Aramaic and Greek, and "Hellenists", Jews speaking only Greek, possibly diaspora Jews who had resettled in Jerusalem. Paul's initial persecution of Christians probably was directed against these Greek-speaking "Hellenists" due to their anti-Temple attitude. Within the early Jewish Christian community, this also set them apart from the "Hebrews" and their continuing participation in the Temple cult. Conversion Paul's conversion can be dated to 31–36 AD by his reference to it in one of his letters. In Galatians 1:16, Paul writes that God "was pleased to reveal his son to me." In 1 Corinthians 15:8, as he lists the order in which Jesus appeared to his disciples after his resurrection, Paul writes, "last of all, as to one untimely born, He appeared to me also." According to the account in the Acts of the Apostles, it took place on the road to Damascus, where he reported having experienced a vision of the ascended Jesus. The account says that "He fell to the ground and heard a voice saying to him, 'Saul, Saul, why do you