From the Anecdotes of Oyasama, there is a story where the priests of the Shinto religions ransacked the place of worship. They also threatened the lives of the followers of the church. Instead of having animosity towards these people, Oyasama prayed to God to save these people.
Many people will be angered and seek recourse for such blatant actions. We see gang members that seek revenge, we see this retribution on a world wide scale. Even in our daily lives, we see family feuds, and conflicts in work places due to retribution.
But does retribution succeed? In most cases, revenge only brings upon more sorrow and suffering. How unique an idea it is to pray for your enemies? Oyasama realized that for the world to have joy, even the people that try to harm us will be saved eventually. It is with this realization that all mankind will be saved, that we must pray for the salvation of everyone, including those that oppose us. When all mankind is purified from their innermost heart, the world will see prosperity and joy never seen before.