Murder is wrong for the same reason why most other species don't kill their own kind: It's bad for genetics and it's bad for social unity. (religion.blogs.cnn.com)
For this special type of social unity Paul found the fitting expression: «the communion of the Holy Spirit» (a Cor. (religion-online.org)
A Society is, in Whitehead's scheme, a type of nexus wherein the relations between its constituents exhibit an ordered relatedness to one another, i.e., some common pattern of relations is manifest wherein the nexus takes on the additional feature of social unity which thus constitutes it as a social nexus, or in Whitehead's terms, a Society per se. (religion-online.org)