4:12 division of soul and of spirit, of joints and of marrow. Though some find support here for the view that a human being is basically a trichotomy consisting of body, soul, and spirit, the context is against it. It stresses the power of God’s word to enter the deepest recesses of a person’s being, and not a sort of division into constituent parts. Also, if the idea of division were intended, we would expect the author to say “bone and marrow” instead of “joints and of marrow.”