The teaching of faith and practice of mentor-disciple or of High Priest dilutes one's faith and practice of the Law.

“When he has finished speaking these words, he should once more bow his head to the ground, make obeisance to all the buddhas and bodhisattvas, and ponder the principle of the broad and impartial sutra. If he does this for one day and so on for three times seven days, then whether he is a householder or one who has left the household he will not need a tutor, nor will he require teachers or the declarations of the confession ceremony. Through the power acquired by accepting, upholding, reading, and reciting the great vehicle sutra, through the help and encouragement proffered by Bodhisattva Universal Worthy, and because this is the eye of the correct Law of the buddhas of the ten directions, relying on this Law, on his own he will succeed in attaining the fivefold body of the Law, which is made up of the precepts, meditation, wisdom, emancipation, and the insight of emancipation. The buddhas, thus come ones, are born from this Law, and in the great vehicle sutra they receive prophecies of their attainment of buddhahood." -  Sutra on How to Practice Meditation on Bodhisattva Universal Worthy, epilogue of the Lotus Sutra