Mind, body and spirit being connected is not some pagan voodoo concept. Genesis 2:7, Then the LORD God formed man from the dust of the ground and breathed the breath of life into his nostrils, and the man became a living being.” Formed from the ground is body, breathed into Him is spirit and the breath of life is mind or free will. Often the heart also represents the body. Paul’s letters are filled with this concept of not allowing the body (the flesh) to control your thoughts or actions. He also writes of soul and spirit often as well. Paul is attempting to guide the people he is writing to so they will have a healthy and pure mind so their spirit and their body will be pure and healthy also.