Material reality is really non-existent. It is only an interpretation of Divine Mind. Even though someone might feel pain or sickness, in reality it does not exist. Pastor really means the combined books of the Bible and Science and Health with Key to the Scriptures. Personhood is an aspect and reflection of Divine Mind.
Prayer is contemplation and internalization of divine truths.
The taking hold of God's willingness. It is an affirmation of God's being in relation to man. Sickness is the false understanding given the appearance of reality by the unfaithful and ignorant of Divine Principle and Mind. Sin is not understanding and behaving according to Divine Law of God and the law of our being. Spirit is another name for God.