Christianity understands God in a distinctive way compared with other Western monotheistic religions. The Trinity, the belief that God can only exist as a unique union of the Creator (Father), Redeemer (Son), and Sanctifier (Holy Spirit), like many Roman Catholic teachings, emerged from an evolutionary process that only became fixed in the sixth century. The ability of the church to work through heresies to achieve orthodoxy solidified the Trinity's place as central to all Christian belief.