Chapter 3 treats authentic spiritual speech as downstream from prior contact with God’s heart. The issue is not eloquence first, but whether the person’s words emerge from a felt participation in what God is already carrying.
That makes humility practical rather than ornamental. A humble person is not merely quiet. A humble person becomes interruptible by God before speaking.
This also gives a test for ministry. When words come first and heart trails behind, speech can still sound religious while remaining spiritually thin.