The power of karma is extremely great. It rivals Mount Sumeru in its heights. It surpasses the great oceans in its depth. It obstructs the path leading to Sagehood. For that reason, beings should never think that minor bad deeds are unimportant or assume that they do not count as offenses. After death there will be retributions to undergo that cover all those details.
(The Sutra of the Past Vows of Earth Store Bodhisattva)