The Goths first encountered Christianity through prisoners taken during warfare in Cappadocia. Widespread evangelization occurred through the work of Ulfilas, the son of a Cappadocian mother and Gothic father. On a visit to Constantinople, Ulfilas was commissioned as a missionary bishop by a leading Arian bishop, Eusebius of Nicomedia. Ulfilas spent the next forty years as an evangelist among the Goths propagating an Arian form of Christianity. Among his accomplishments as a missionary was a translation of the Bible into the Gothic language. He omitted the books of Kings from his translation of the Old Testament on the ground that the Goths already knew quite enough about warfare.