When the three obstacles and four devils appear, and the wise will rejoice while the foolish will retreat

There is definitely something extraordinary in the ebb and flow of the tide, the rising and setting of the moon, and the way in which summer, autumn, winter and spring give way to each other. Something uncommon also occurs when an ordinary person attains Buddhahood. At such a time, the three obstacles and four devils will invariably appear, and the wise will rejoice while the foolish will retreat. 21/11

The Writings of Nichiren Daishonin
The Three Obstacles and Four Devils
Written to Ikegami Hyoe no Sakan Munenaga on November 20, 1277