Historic communion or branch
A broad location in Christian history, such as Roman Catholic, Eastern Orthodox, or Protestant.
Learn how branches, denominations, theological traditions, movements, networks, and local structures fit together—without collapsing distinct groups into one label.
01 · Kinds of groups
Labels answer different questions. Seeing the layer prevents a movement, denomination, theology, and church structure from being mistaken for the same kind of thing.
A broad location in Christian history, such as Roman Catholic, Eastern Orthodox, or Protestant.
A shared lineage or an organized church body, such as Lutheranism, the PCA, or Assemblies of God.
A system of doctrine that can cross institutions, such as Reformed theology.
A renewal current or voluntary association, such as evangelicalism, New Calvinism, or Calvary Chapel.
How a congregation is connected and governed; “non-denominational” describes structure, not a complete theology.
02 · Start here
Build the vocabulary first, then use the directory and comparison tools with better questions.
Learn to separate historical branch, denomination, theology, movement, network, and local structure instead of forcing one label to answer every question.
02Meet four historic Christian communions while respecting their distinct histories, councils, liturgies, and accounts of continuity.
03See Protestantism as a broad branch containing several families that disagree on sacraments, election, polity, worship, and the church.
04Untangle six modern labels that often overlap while answering different theological and organizational questions.
03 · Featured groups
Baptist tradition
Baptist churches that combine believer’s baptism and local-church ecclesiology with Reformed soteriology and often a confessional framework such as the 1689 London Baptist Confession.
This family supplies the guide’s broad Reformed Baptist reference benchmark. It aligns on Reformed soteriology, believer’s baptism, autonomous congregational church order, and spiritual reception of Christ by faith in Communion. Churches still vary on several secondary topics, so the guide does not score those variations by default.
Presbyterianism
A conservative Reformed and Presbyterian denomination in North America whose doctrinal standards are the Westminster Confession and Catechisms, subordinate to Scripture.
The PCA is among the closest paedobaptist bodies to the guide’s base beliefs. Major differences are infant baptism and connectional polity; some local PCA churches may otherwise feel very close in preaching and culture.
Pentecostalism
A major Trinitarian Pentecostal fellowship teaching biblical authority, salvation through Christ, believer’s baptism, divine healing, and a distinct baptism in the Holy Spirit initially evidenced by speaking in tongues.
Assemblies of God shares the Trinity, Scripture, Christ’s saving work, evangelical conversion, justification, and believer’s baptism. Arminian soteriology and its distinct Spirit-baptism and tongues teaching are important differences; continuationism itself is not penalized because Reformed Baptist churches vary on gifts.
Christianity
The largest historic Christian communion, centered on communion with the bishop of Rome, the pope, and characterized by Scripture and Tradition, a teaching Magisterium, seven sacraments, and a worldwide episcopal structure.
The guide’s base beliefs share the Trinity, Christ’s deity and humanity, bodily resurrection, and many moral teachings. It has major, church-dividing disagreements over final authority, justification, the sacramental system, the papacy, Marian dogmas, invocation of saints, and purgatory. The guide must explain Catholic grace accurately before presenting the Reformed critique.
04 · Reformed Baptist Base Beliefs
The guide uses a broad Reformed Baptist reference point: conservative evangelical Protestant, Reformed in salvation, committed to believer’s baptism, and organized around autonomous congregational churches. Scripture is final, with historic Baptist confessions—especially the 1689 Second London Confession—serving beneath it. Communion is understood as spiritual reception of Christ by faith, not a sacrifice.
Reformed Baptist churches vary on spiritual gifts, detailed covenant and polity formulations, confessional subscription, ministry boundaries, and millennial or rapture views. The guide does not score those variations by default.
Faith Neighbors05 · How the guide works