This episode traces the doctrine of the Trinity back into the Old Testament, examining passages like Deuteronomy 6:4, Isaiah 63, Psalm 78, Genesis 19, Daniel 7, and Psalm 110 to show how Father, Son, and Holy Spirit are present and distinct yet one.

Hosts explain concepts such as the "two powers in heaven," the angel of the Lord as the pre-incarnate Son, and how Old Testament theology leads into New Testament revelation.