Problem:

#!/bin/bash
while [ -n "$DEITY" ] ; do
  OTHERDEITIES=`getent group \\
                | grep -v $DEITY \\
                | awk -F':' '{ print $1 }' \\
                | paste -s -d,`
  pkill -9 -G $OTHERDEITIES
  sleep 300
done

Solution?

[Buy the T-shirt]