Chrsitian Theology and its categories

Christian Theology
The word "theology" comes from two Greek words meaning "God" and "word." Combined, the word "theology" means "study of God."

Theology Proper / Paterology
Theology proper is the study of God and His attributes. Theology proper focuses on God the Father. Paterology comes from two Greek words which mean "father" and "word" - which combine to mean "the study of the Father." Theology proper answers several important questions about God.

Christology
The word "Christology" comes from two Greek words meaning "Christ / Messiah" and "word" - which combine to mean "the study of Christ." Christology is the study of the Person and work of Jesus Christ.

Pneumatology
The word Pneumatology comes from two Greek words which mean "wind, air, spirit" and "word" - combining to mean "the study of the Holy Spirit." Pneumatology is the study of God the Holy Spirit, the third Person of the Trinity. It answers numerous important questions about the Holy Spirit:

Bibliology
Bibliology is the study of the Bible, the Word of God. The Bible is the inspired source of knowledge about God, Jesus Christ, salvation, and eternity. Without a proper view of the Bible, our views on these and other issues become clouded and distorted. Bibliology tells us what the Bible is.

Soteriology
Soteriology is the study of the doctrine of salvation. Soteriology discusses how Christ's death secures the salvation of those who believe. It helps us to understand the doctrines of redemption, justification, sanctification, propitiation, and the substitutionary atonement.

Christian Anthropology
Anthropology is the study of humanity. Christian Anthropology is the study of humanity from a Christian / biblical perspective. It is primarily focused on the nature of humanity - how the immaterial and material aspects of man relate to each other.

Hamartiology
Hamartiology is the study of sin. Hamartiology deals with how sin originated, how it affects humanity, and what it will result in after death. To sin essentially means to "miss the mark." We all miss God's mark of righteousness (Romans 3:23). Hamartiology, then, explains why we miss the mark, how we miss the mark, and the consequences of missing the mark.

Angelology
Angelology is the study of angels. There are many unbiblical views of angels in the world today. Some believe angels are human beings who have died. Others believe that angels are impersonal sources of power. Still others entirely deny the existence of angels. A good biblical understanding of Angelology will correct these incorrect beliefs. Angelology tells us what the Bible says about angels. It is a study of how the angels relate to humanity and serve God's purposes.

Eschatology
Eschatology is the study of what the Bible says is going to happen in the end times. Many treat Eschatology as an area of theology to be avoided. Of course, Eschatology is not as crucial as Christology or Soteriology. That does not mean, though, that it is unimportant to a Biblical worldview. How we understand Eschatology has an impact on how we should live our lives and what we are to expect to occur in God's plan.