The teaching of the three kinds of enemies of the Lotus Sūtra is the sūtra’s way of warning us that if we present the teaching of the Lotus Sūtra we should not be surprised if we meet opposition from ignorant laypeople, corrupted clergy, and even respected teachers who are regarded as saints. We must not let this discourage us. Nor should we look for enemies or return abuse with abuse. From beginning to end we must treat all beings as future buddhas, whether they are presently acting as such or not. Another lesson we can take from this teaching is that we must be careful to not become one of the three kinds of enemies ourselves. We must not uncritically accept the teachings of others without checking things out for ourselves, like the ignorant laypeople.
We should not become arrogant and greedy like the evil monks, especially if we are put in a position of authority. We should not, like the false arhats, become self-righteous and pretend to be awakened when we are still tainted by greed, hatred, and delusion. Nor should we persecute others just because their opinions and views are different than our own, as the three kinds of enemies are said to do. Again, the humble, straightforward, and respectful practice of the Lotus Sūtra as exemplified by Never Despising Bodhisattva can serve as the model that will keep us from becoming one of the three kinds of enemies and enable us to deal in a firm but kind manner with them, should they confront us, so that we can eventually overcome all enmity and sow the seeds of buddhahood in their hearts.
Open Your Eyes, p509-510