- Christian Classics: These are works that have stood the test of time, offering profound insights into Christian faith, practice, and devotion. They often include writings by church fathers, reformers, Puritans, and other influential theologians whose contributions have shaped Christian thought and spirituality across centuries.
- Biblical Theology: This field focuses on the progressive revelation of God's redemptive plan as it unfolds throughout Scripture. It examines the unity and diversity of biblical texts, tracing themes, symbols, and narratives that reveal God's character and purposes from Genesis to Revelation.
- Soteriology: Soteriology is the study of salvation. It explores how redemption is accomplished and applied to God's people, including topics such as election, atonement, justification, sanctification, and glorification, often highlighting the grace and sovereignty of God in the process of saving sinners.
- Systematic Theology: This discipline organizes and synthesizes theological topics in a coherent and logical manner, addressing doctrines related to God, humanity, sin, salvation, the church, and the last things (eschatology), among others. It seeks to present a comprehensive understanding of Christian faith and practice.
- Doctrine of God: This category explores the nature, attributes, and triune existence of God. It delves into theological discussions about God's omniscience, omnipotence, omnipresence, immutability, holiness, justice, love, and mercy, as well as the relationships within the Trinity.
- The Five Solas: These are five foundational principles that emerged during the Reformation, summarizing key theological convictions: Sola Scriptura (Scripture alone), Sola Fide (faith alone), Sola Gratia (grace alone), Solus Christus (Christ alone), and Soli Deo Gloria (to the glory of God alone). They emphasize the authority of Scripture and the sufficiency of Christ's work for salvation.
- Doctrines of Grace: Often associated with Calvinism, these doctrines summarize the Reformed perspective on salvation, emphasizing God's sovereignty and grace. They include Total Depravity, Unconditional Election, Limited Atonement (or Particular Redemption), Irresistible Grace, and Perseverance of the Saints.
- The Gospel: This category encompasses the good news of Jesus Christ's life, death, resurrection, and ascension, through which God offers forgiveness of sins and eternal life to all who believe. It is the central message of Christianity, calling for faith and repentance.
- Prayer: This involves communication with God, including adoration, confession, thanksgiving, and supplication. Prayer is both a privilege and a duty for believers, reflecting dependence on God, seeking His will, and interceding for others.
- Practical Living: This focuses on the application of biblical principles to everyday life, including ethics, stewardship, relationships, work, and personal growth. It emphasizes living out one's faith in a way that reflects Christ's character and commands, impacting every aspect of life.