It's effective to deliver the dead when one's own children and close relatives themselves recite the sutras, make offerings, prostrate to the Buddha, and perform meritorious acts. Nevertheless, one should make an effort before one dies to deliver oneself by practicing Buddhism, listening to the Dharma, practicing giving, making offerings, repenting one's karmic hindrances, doing good deeds, and contributing to society. If you can also aspire rebirth in the Western Pure Land of Ultimate Bliss and come back to the human world to deliver sentient beings, then you've generated the bodhi-mind and made the bodhisattva vow. This is the most reliable way for deliverance.
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