Joseph Smith clearly taught that the only way that the Lord dwells in the heart is by the Holy Ghost. This doctrine was taught in response to the common Christian notion that God is without body, parts, and passions—immense enough to fill the entirety of space and yet small enough to dwell in the heart. Joseph declared, the idea that the Father and the Son dwell in a man’s heart is an old sectarian notion, and is false…but the Holy Ghost has not a body of flesh and bones, but is a personage of Spirit. Were it not so, the Holy Ghost could not dwell in us (DC 130:3,22).