The Reward for Observing the Five Precepts

To be born as a human being is a reward for observing the five precepts in a past life. Those who keep the five precepts are protected not only by twenty-five virtuous gods but also by two heavenly beings named Dōshō (Same Birth) and Dōmyō (Same Name), who are always perched on the shoulders of the precept keepers from their birth to watch over and protect them. Therefore, even demons cannot do any harm to the faithful unless a serious mistake is committed.

Shuju Onfurumai Gosho, Reminiscences: from Tatsunokuchi to Minobu, Writings of Nichiren Shōnin, Biography and Disciples, Volume 5, Pages 44