Pauline Christianity or Pauline theology, otherwise referred to as Gentile Christianity, is the theology and form of Christianity which developed from the beliefs and doctrines espoused by the Hellenistic-Jewish Apostle Paul through his writings and those New Testament writings traditionally attributed to him. Paul's beliefs were rooted in the earliest Jewish Christianity, but they deviated from this Jewish Christianity in their emphasis on inclusion of the Gentiles into God's New Covenant and in his rejection of circumcision as an unnecessary token of upholding the Mosaic Law.

The New Covenant is a biblical interpretation which was originally derived from a phrase which is contained in the Book of Jeremiah, in the Hebrew Bible.