- Aaron's son
- Abaddon. . .Apollyon
- Abbreviations Used in Commentaries
- "Abiding" in John's Writings
- Abomination of Desolation
- Abomination (OT)
- Abound (periseuo)
- Above Reproach (qualifications for church leaders)
- Acacia Wood
- Adoptionism
- Adultery (Exodus 20:14)
- Age and Formation of Earth
- Age of Accountability
- Age (see Human Aging)
- Alcohol - Alcoholism
- Almsgiving
- Altar of Incense
- Altar of Sacrifice
- Amalek
- Amen
- Ammon
- Amorite
- Anakim (see Giants)
- Ancient Near Eastern Calendars
- Ancient Near East Weights and Volumes
- ANE Creation and Flood Myths
- ANE Sacred Colors
- Angelic Levels in Paul's Writings
- Angels in the Bible
- The Alexandrian School of Biblical Interpretation
- The Almighty
- The Angel of the Lord
- This Age and the Age to Come