Day 20 completes Chapter 15, The Appearance of Bodhisattvas from Underground, and concludes the Fifth Volume of the Sutra of the Lotus Flower of the Wonderful Dharma.
Having last month heard Śākyamuni’s response to greeting from the leaders of the Bodhisattvas who emerged from the earth, we consider Maitreya Bodhisattva’s puzzlement.
Thereupon Maitreya Bodhisattva and the [other] Bodhisattvas [who had already been present in the congregation before the arrival of the Bodhisattvas from underground], eight thousand times as many as the sands of the River Ganges in number, thought:
‘We have never before seen these great Bodhisattva-mahāsattvas who sprang up from underground, stood before [Śākyamuni,] the World-Honored One, joined their hands together towards him, and made offerings to him. [Now we see that their leaders] inquire after him.’
Thereupon Maitreya Bodhisattva-mahāsattva, seeing what the Bodhisattvas numbering eight thousand times as many as the sands of the River Ganges had in their minds, and also wishing to remove his own doubts, joined his hands together towards the Buddha, and asked him in gāthās:
We have never seen
These many thousands of billions
Of Bodhisattvas.
Tell me, Most Honorable Biped!
Where did they come from?
They have gigantic bodies,
Great supernatural powers, and inconceivable wisdom.
They are resolute in mind.
They have a great power of patience.
All living beings are glad to see them.
Where did they come from?They are each accompanied
By as many attendants
As there are sands
In the River Ganges.
Nichiren writes about why Maitreya asked the Buddha about these Bodhisattvas.
[W]hen the Buddha preached the essential section of the Lotus Sūtra, He displayed omens far superior to the omens presented when the pre-Lotus sūtras and the theoretical section of the Lotus Sūtra were preached. The severe quakes of the earth when the Stupa of Treasures sprang out of the earth (in the “Beholding the Stupa of Treasures” chapter) and the numerous bodhisattva disciples of the Original Buddha that emerged from the earth simultaneously (“Emergence of Bodhisattvas from the Earth” chapter) created waves as high as mountains that tossed sailing boats around in a stormy ocean as if they were tiny reed leaves.
Therefore, while Bodhisattva Maitreya asked Bodhisattva Mañjuśrī to explain the omens shown in the “Introductory” chapter, he asked his question to the Buddha directly regarding the great omens shown in the “Emergence of the Bodhisattvas from the Earth” chapter. Grand Master Miao-lê explains this in his Annotations on the Words and Phrases of the Lotus Sūtra, fascicle 3, “As for the theoretical section, Mañjuśrī could be trusted, but the essential section is too profound for anyone to conjecture. Therefore, Bodhisattva Maitreya had no one but the Buddha to direct his questions.” Thus, Mañjuśrī had a general understanding regarding the teaching of the theoretical section though the Buddha did not preach it. However, even Mañjuśrī could not fathom the doctrine of the essential section. And yet great omens such as these occurred during the lifetime of the Buddha.
Zuisō Gosho, Writing on Omens, Writings of Nichiren Shōnin, Volume 6, Followers I, Pages 122-123