From Halopedia, the Halo wiki
Abada was believed to be a judge that souls must be humble before in order to be granted his favor upon their death. Those who were successful in doing so would have their bones watched over by Abada so that no predators would disturb them before the time that the Great Elephant would nudge them from the dirt and restore the person to life. Following this, the individual would be allowed to pass onto the Far Shore before the end of time. It was thought that fear in the face of death or a failure of the still-living to conduct the proper rites may dissuade Abada from watching over one's bones, and that this would therefore doom one to a miserable afterlife, wherein they would be forced to walk forever aimlessly and be assaulted by wild animals, such as hyenas and buzzards. The funeral rites involved the recitation of prayers to Abada and the Great Elephant. The "sacred caves" outside Marontik were decorated with artistic depictions of Abada.
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