The Eleven--Valentino's group in Pinyudo--represents the 12 disciples because if you include him it makes twelve. He also comments on how they are the best and that even one of the members is a great fisherman just as how Peter of the disciples was a fisherman.
Moses is like Judas betraying the group and Valentino to join the SPLA and to meagerly throw away his life.
Tabitha is compared indirectly to being an angel in how he wishes he could watch her ascend upon an escalator.
Valentino's constant mishaps are trials he must overcome to become a better person. Free from his war ridden past.