The Great Doctrines of the Church · Organized, Interconnected, Scripture-Grounded
| Module | Title | Level | Focus |
|---|---|---|---|
| SOA-108 | Systematic Theology | First & Second Year | The Nine Core Christian Doctrines: Trinity, Soteriology, Hamartiology, Bibliology, Anthropology, Ecclesiology, Angelology, Eschatology |
The Systematic Theology module is designed to provide SOA students with a structured and comprehensive study of core Christian doctrines. Through in-depth exploration, students will examine key theological topics such as the nature of God, Christology, pneumatology, soteriology, ecclesiology, and eschatology.
This module emphasizes the importance of understanding how these doctrines are interconnected and grounded in Scripture. By fostering critical thinking and biblical analysis, students will gain a deeper understanding of the Christian faith, enabling them to articulate their beliefs with clarity and confidence while applying theological principles to their personal lives and ministry.
Systematic theology is the disciplined study and organization of theological beliefs within a comprehensive framework, aiming to articulate and understand the fundamental doctrines of a particular faith tradition. These doctrines serve to provide believers with a comprehensive understanding of their faith, defend against false teachings, equip for ministry, and promote unity within the church. Ephesians 4:13–15 — "Till we all come in the unity of the faith…that we henceforth be no more children, tossed to and fro, and carried about with every wind of doctrine."
Recommended Text: "The Great Doctrines of The Bible" by William Evans
Doctrine refers to a set of beliefs or teachings that are foundational to a particular religion, philosophy, or organization. In the context of the Christian faith, doctrine encompasses the fundamental principles and truths derived from Scripture that form the basis of Christian theology and practice. These doctrines provide a framework for understanding God, the world, and one's relationship with both — and they guide believers in their worship, ethics, and mission.
The Ancient Ecumenical Councils
| Council | Date | Issue Addressed | Key Outcome |
|---|---|---|---|
| First Council of Nicaea | 325 AD | The Arian controversy — denied the full divinity of Christ | Formulated the Nicene Creed; affirmed the deity of Christ as "of one substance with the Father" |
| First Council of Constantinople | 381 AD | Further clarification of the Trinity; divinity of the Holy Spirit | Expanded and confirmed the Nicene Creed; affirmed the full divinity of the Holy Spirit |
| Council of Ephesus | 431 AD | The Nestorian controversy — question of Christ's two natures and Mary as "Theotokos" | Affirmed the unity of the person of Christ as both fully human and fully divine |
| Council of Chalcedon | 451 AD | The Monophysite controversy — Christ's divine nature absorbing the human | Formulated the Chalcedonian Definition: Christ has two natures in one person, without confusion or mixture |
The term "Trinity" originates from the Latin word trinitas, meaning "threefold" or "triad." It describes the Christian belief in one God existing eternally in three distinct Persons: Father, Son, and Holy Spirit. While the term "Trinity" does not appear in the Bible, the doctrine is implied throughout both Testaments.
A. Theology — The Nature of God
The doctrine of Theology encompasses the systematic study and understanding of God — His nature, His attributes, and His relationship with humanity. In Genesis 1, the word used for God is "Elohim" — a plural noun in Hebrew used to refer to the one true God. In Genesis 2, the four-lettered name YHWH (the Tetragrammaton) first appears, revealing God's personal covenant name.
Jeremiah 32:17 — "There is nothing too hard for thee." No force in creation can thwart the purposes of God or exceed the scope of His power.
Isaiah 46:10 — "Declaring the end from the beginning." God knows all things — past, present, and future — completely and simultaneously.
Psalm 139:7–10 — "Whither shall I go from thy spirit?" God's presence fills all of creation simultaneously; there is no place outside of His awareness.
Malachi 3:6 — "For I am the Lord, I change not." God's character, nature, and purposes do not change; His promises are eternal and reliable.
Isaiah 6:3 — "Holy, holy, holy, is the Lord of hosts." God is beyond any stain of sin or imperfection; He is the standard by which all goodness is measured.
1 John 4:8 — "God is love." Not merely that God loves, but that love is the very essence of His being. Every attribute of God is an expression of His love.
B. Christology — The Person and Work of Christ
Christology is the branch of Christian theology that focuses on the study of Jesus Christ, particularly His nature, identity, and role in the redemption and salvation of humanity. The name "Christ" derives from the Greek Christos, the translation of the Hebrew Mashiach — "Anointed One" or "Messiah."
| Key Aspect of Christology | Description | Scripture |
|---|---|---|
| Incarnation | The Son of God took on human flesh, becoming fully human while remaining fully divine | John 1:14 — "The Word was made flesh, and dwelt among us" |
| Divinity of Christ | Jesus shares in the eternal nature and attributes of God; He is the second person of the Trinity | John 10:30 — "I and my Father are one" |
| Humanity of Christ | Jesus experienced human emotions, physical limitations, and temptations, yet remained sinless | Hebrews 4:15 — "Tempted in every way, yet without sin" |
| Messiahship | Jesus fulfills Old Testament prophecies concerning the Messiah, bringing salvation through His life, death, and resurrection | Luke 4:21 — "This day is this scripture fulfilled in your ears" |
| Role as Mediator | Jesus is the only mediator between God and humanity, reconciling humanity to God | 1 Timothy 2:5 — "One mediator between God and men, the man Christ Jesus" |
| Resurrection and Exaltation | The bodily resurrection validates Christ's claims and ensures the hope of believers for their own resurrection | 1 Corinthians 15:20 — "Christ risen from the dead, the firstfruits of them that slept" |
C. Pneumatology — The Doctrine of the Holy Spirit
The terms "Holy Spirit" and "Holy Ghost" are used interchangeably. Both refer to the third person of the Trinity. In Greek: Hagion Pneuma (Holy Spirit). In Hebrew: Ruach HaKodesh (Holy Spirit). The Holy Spirit is a person — not a force or influence — as evidenced by personal pronouns, emotions, and relational actions attributed to Him in Scripture.
Soteriology, derived from the Greek word soteria, is the fundamental doctrine in Christian theology concerning the study of salvation. At the core of soteriology lies John 3:16 — "For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life."
The Greek word for salvation — conveying deliverance, preservation, healing, and wholeness. Salvation encompasses every dimension of the human person: spirit, soul, and body.
Not merely intellectual assent but deep trust and reliance on Christ for salvation. John 3:16 uses this word to describe the faith that leads to eternal life.
The unmerited favor bestowed upon humanity by God. Ephesians 2:8–9 — "By grace are ye saved through faith…it is the gift of God: Not of works." Grace is the source; faith is the channel.
To "say the same thing" — agreeing with God about who Jesus is and what He has done. Romans 10:9–10 — "With the mouth confession is made unto salvation."
Titus 3:5 — "Not by works of righteousness which we have done, but according to his mercy he saved us." God's compassionate, undeserved act of saving humanity.
"Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved." Salvation is found in Christ alone.
Hamartiology is the theological study or doctrine concerning the nature, origin, consequences, and implications of sin. The term derives from two Greek words: hamartia (sin) and logos (study). The Bible presents Lucifer as the first being to sin, before the creation and fall of humanity.
"How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations!…I will exalt my throne above the stars of God…I will be like the most High. Yet thou shalt be brought down to hell."— Isaiah 14:12–15 · Lucifer — The First to Sin
Key Biblical Terms for Sin
| Term | Language | Meaning | Scripture |
|---|---|---|---|
| Chattā'th | Hebrew | "To miss the mark" — failure to hit God's standard of righteousness | Exodus 20:20 |
| Ra | Hebrew | "Evil" or "ruin" — the destructive nature and outcome of sin | Genesis 38:7 |
| Ta'ah | Hebrew | "Going astray" — wandering from the path God has set | Isaiah 53:6 |
| 'Āwōn | Hebrew | "Iniquity, guilt, perversion" — moral corruption and guilt before God | Isaiah 53:5; Exodus 34:7 |
| Hamartanō | Greek | "To miss the mark" — the same concept as chattā'th in the New Testament | Romans 5:12 |
| Kakos | Greek | "Disease" or "moral filth" — sin as a corrupting, defiling force | 1 Thessalonians 5:22 |
| Poneros | Greek | "Moral evil, malicious, intentional wickedness" | Hebrews 3:12; Matthew 6:13 |
| Anomos | Greek | "Lawlessness" — rejecting God's law and divine authority entirely | 1 John 3:4; 2 Thessalonians 2:8 |
Romans 3:23 — "For all have sinned, and come short of the glory of God." Romans 5:12 — "Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned." Sin is not merely behavior — it is a condition of the heart and will, inherited from the first Adam, and in need of redemption through the second Adam, Jesus Christ (1 Corinthians 15:45–49).
#5 — Bibliology: The Doctrine of the Bible
Bibliology is the branch of theology concerned with the study of the Bible — encompassing its nature, authority, inspiration, inerrancy, and interpretation. Christians believe the Bible is a unique and divine revelation, inspired by God but written by human authors under the guidance of the Holy Spirit. 2 Timothy 3:16–17 — "All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness." 2 Peter 1:20–21 — "Holy men of God spake as they were moved by the Holy Ghost."
#6 — Anthropology: The Doctrine of Humanity
Theological anthropology explores the nature, origin, purpose, and destiny of human beings from a religious perspective. The central teaching is that humanity is made imago Dei — in the image of God (Genesis 1:27). This establishes the inherent dignity, moral agency, and relational capacity of every human being. The Fall introduced the distortion of that image through sin (Romans 5:12), but redemption in Christ is the restoration of that image (Colossians 3:10; Romans 8:29).
#7 — Ecclesiology: The Doctrine of the Church
Ecclesiology is the study of the nature, structure, and purpose of the Christian Church. The Greek word ekklesia means "called-out ones." The Church is: the Body of Christ (1 Corinthians 12:27), a royal priesthood (1 Peter 2:9), a holy nation, and God's dwelling place through the Spirit (Ephesians 2:22).
The Church is a living community of believers unified in faith and practice, whose primary purpose is to glorify God. Ecclesiastes 4:12 illustrates the unity and strength found in community — "A threefold cord is not quickly broken."
Ephesians 4:11–12 — "He gave some, apostles; and some, prophets; and some, evangelists; and some, pastors and teachers; For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ."
To glorify God through worship, proclaim the Gospel, make disciples, administer sacraments, care for members, bear witness to the Kingdom, and engage in acts of justice, mercy, and service — fulfilling the Great Commission (Matthew 28:19–20).
Matthew 28:19–20 — "Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: Teaching them to observe all things whatsoever I have commanded you."
#8 — Angelology: The Doctrine of Angels
Angelology is the branch of theology that deals with the study of angels — spiritual beings created by God to serve as messengers, protectors, and agents of divine will. In Greek, the term for angels is ángelos (messenger). Angels are mentioned numerous times in both Testaments, often depicted as celestial beings who act as intermediaries between God and humans.
The Traditional Angelic Hierarchy:
Colossians 2:18 warns against the "worship of angels." Revelation 19:10 and 22:8–9 show an angel explicitly telling John, "Worship God!" — not the angel. Angels themselves are worshipers of God, not objects of worship. Hebrews 1:14 clarifies their role: "Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?" Angels serve the saints; they are not to be served by the saints.
#9 — Eschatology: The Doctrine of Last Things
Eschatology, derived from the Greek word eschatos (last or final), is the theological study of the last things or the end times. In Christian belief, eschatology encompasses death, judgment, heaven, hell, the return of Christ, and the ultimate destiny of humanity and the cosmos.
Matthew 24:30–31 — "They shall see the Son of man coming in the clouds of heaven with power and great glory. And he shall send his angels with a great sound of a trumpet." Christ's return is certain, visible, personal, and glorious.
1 Corinthians 15:51–52 — "We shall all be changed, in a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible." Both believers and unbelievers will be resurrected for judgment.
Revelation 20:11–12 — "I saw a great white throne…and the dead were judged out of those things which were written in the books, according to their works." This is the Great White Throne Judgment for the unbelieving dead.
Revelation 21:1–2 — "I saw a new heaven and a new earth: for the first heaven and the first earth were passed away." God will dwell with His people eternally in a restored, perfected creation free from sin, death, and sorrow.
The Systematic Theology module offers a comprehensive exploration of key theological doctrines, providing students with a well-rounded understanding of Christian beliefs. Through in-depth study of biblical teachings, historical developments, and theological interpretations, students gain insight into the nature of God, salvation, the Church, and other core aspects of the Christian faith. This module equips learners to think critically about theological concepts and articulate their beliefs with clarity and confidence — not merely as academic knowledge, but as living truth that transforms the way we see God, ourselves, and the world He has redeemed.