The body of Christ cannot save you. If an individual does not have Christ they are lost. We cannot rely upon anyone other than Christ for our salvation. The individual has to follow or reject Christ.
The Body of Christ IS Christ. This is one of the very rich implications of the Incarnation. Is not Christ the Son of God come in the flesh? Which is to say, in His human nature, in His Body? As St.John says, “Many deceivers have gone out into the world, those who do not acknowledge Jesus Christ as coming in the flesh; such is the deceitful one and the antichrist.” 2 John 1:7