Pantaenus was a Stoic philosopher teaching in Alexandria. He was a native of Sicily. He converted to the Christian faith, and sought to reconcile his new faith with Greek philosophy. Although no writings by Pantaenus are extant, his legacy is known by the influence of the Catecheticaar in the early debates on the interpretation of the Bible, the Trinity, and Christology. In addition to his work as a teacher, Pantaenus was for a time a missionary, traveling as far as India where, he found Christian communities using the Gospel of Matthew written in "Hebrew letters", supposedly left them by the Apostle Bartholomew.