The plea to cling is gently refused, not because love withholds itself but because a mind that grasps at form still believes the treasure lives in the body. What is real cannot be held by the hand; it can only be shared. So the one who is found is at once sent outward, told to carry the news to others, because love kept private is not yet understood.
The joining named here undoes every belief in separation: one Father, held in common, makes every brother the same self. A mind that would truly keep its beloved learns it cannot possess him, only recognize the one Source they share and go tell the rest that they share it too.
The brethren: the parts of the one mind still waiting to hear that separation is undone, the brothers who must be told.
The Father: the single Source held in common, in which no one is apart from another and nothing can be owned.