仁王般若經疏 3.153

3.153

「大王！我今五眼明見，三世一切國王皆由過去世侍五百佛得為帝王主，是為一切聖人羅漢而為來生彼國土中作大利益。若王福盡時，一切聖人皆為捨去。若一切聖人去時，七難必起。」

"Great King! With my five eyes I now see clearly that all kings across the three periods of time have attained kingship by serving five hundred buddhas in past lifetimes, and it is for this reason that all noble beings and arhats come to be born in those realms to bring great benefit. When a king's merit is exhausted, all the noble beings abandon him and leave. When all the noble beings leave, the seven calamities will surely arise."