Doctrine of God: Trinity (Part 4): The Holy Spirit
Doctrine of God: Trinity (Part 5): The Historical Survey
Doctrine of God: Trinity (Part 6): Historical Survey (2) | Modalism
Doctrine of God: Trinity (Part 7): Historical Survey (3) | Arianism
Doctrine of God: Trinity (Part 8): Historical Survey (4) | Coherence of the Doctrine
Doctrine of God: Trinity (Part 9): Three Divine Persons, One God
Doctrine of God: Trinity (Part 10): The Relationship Between Father, Son, and Holy Spirit
Doctrine of God: Trinity (Part 11): A Plausibility Argument for the Trinity
Doctrine of the Holy Spirit (part 1): Third Person of the Trinity
Doctrine of the Holy Spirit (part 2): Ministries of the Holy Spirit
