Protestant theology refers to the doctrines held by various Protestant traditions, which share some things in common but differ in others. In general, Protestant theology, as a subset of Christian theology, holds to faith in the Christian Bible, the Holy Trinity, salvation, sanctification, charity, evangelism, and the four last things.
Various Protestant denominations differ in their doctrine, with churches teaching either Wesleyan-Arminian theology, Reformed theology, or Baptist theology. Other evangelical bodies, such as the Lutheran Church–Missouri Synod, Presbyterian Church in America and the Evangelical Friends Church International may subscribe to what they see as the orthodox theology espoused by their historic tradition, such as Lutheranism, Presbyterianism or Quakerism respectively.