The renewing of the mind is not a one-time event, but a lifelong process of spiritual transformation where God’s truth continually reshapes our thoughts, attitudes, and perspectives, enabling us to increasingly reflect the mind of Christ.
(Dr. R. Albert Mohler Jr.)

     The mind is the control center of a person's life. It processes information, stores memories, makes decisions, and determines our worldview. Therefore, if we are to be transformed by God, the first place He must work is in our minds.
(John MacArthur)

     It is easier to imitate than to originate... This is why being has ceased to have much appeal for people and doing engages almost everyone's attention. Modern Christians lack symmetry. They know almost nothing about the inner life. They are like a temple that is all exterior without any interior. Color, light, sound, appearance, motion — these are thy gods, O Israel. Externalism has taken over. God now speaks by the wind and the earthquake only... The whole religious machine has become a noisemaker. The adolescent taste which loves the loud horn and the thundering exhaust has gotten into the activities of modern Christians.
(A.W. Tozer)