法華義疏 5.313

5.313

勸門為本，誡門為末，諸佛出世本為開佛知見，但眾生不解故後方辨生死過患也。又佛慧難解、生死過患易知，故前說所難，後陳所易。

The gate of encouragement is the root, and the gate of admonition is the branch. The appearance of the Buddhas in the world is fundamentally to open the Buddha's knowledge and vision; only because sentient beings did not understand did he afterward distinguish the faults and perils of saṃsāra. Furthermore, the Buddha's wisdom is difficult to understand, whereas the faults and perils of saṃsāra are easy to know; therefore, he first spoke of what is difficult, and afterward set forth what is easy.