Dr. Deprince is meticulous about protocol. Here is her standard "Unlocking Ritual" as prescribed in Chapter 3 of The Mystical Keys To The Psalms :
Dr. Deprince responds to these critics in the preface of her book: "Faith without mechanics is sentimentality. God built the universe on logos—mathematical, musical, and measurable. The Pharisees accused Jesus of using the 'key of David' illegitimately. I stand with the mystics. A key does not replace the locksmith; it honors him by using his design." The Mystical Keys To The Psalms Dr Thessalonia Deprince