Harmony and Consistency

The Son shows himself to be in harmony with the commands of the Father, and therefore with the will of the Father. This harmony implies consistency in the thinking and actions of the Father and the Son... The Spirit speaks in harmony with what belongs to both the Father and the Son.

 

Vern Poythress, Logic: A God-Centered Approach to the Foundation of Western Thought (Wheaton, IL: Crossway, 2012), 88-89