30.
The Discourse on Ghosts, Gods, Sphere of Ghosts
1201.
Etc. So too, monks, few are those beings who, having passed away from the sphere of ghosts, are reborn among the gods;
but there are indeed more beings who, having passed away from the sphere of ghosts, are reborn in the sphere of ghosts.
What is the reason for this?
Because of not seeing, monks, the four noble truths.
Which four?
The noble truth of suffering, the noble truth of the origin of suffering, the noble truth of the cessation of suffering, the noble truth of the practice leading to the cessation of suffering."
"Therefore, monks, exertion is to be done regarding 'This is suffering'; exertion is to be done regarding 'This is the origin of suffering'; exertion is to be done regarding 'This is the cessation of suffering'; exertion is to be done regarding 'This is the practice leading to the cessation of suffering.'" This is what the Blessed One said. Those monks, delighted, rejoiced in what the Blessed One had said. The thirtieth.