Day 14 covers all of Chapter 9, The Assurance of Future Buddhahood of the Śrāvakas Who Have Something More to Learn and the Śrāvakas Who Have Nothing More to Learn, and opens Chapter 10, The Teacher of the Dharma.

Ānanda always protects the store of the Dharma and Rāhula is the Buddha’s son. But they still feel it necessary to beg the Buddha for assurance of their future Buddhahood. And then there are the 8,000 Bodhisattvas who ask: “Why have these Śrāvakas been so assured?”

The answer:

“Good men! Ānanda and I resolved to aspire for Anuttara-samyak-saṃbodhi under the Void-King Buddha at the same time [in our previous existence]. At that time Ānanda always wished to hear much while I always practiced strenuously. Therefore, I have already attained Anuttara-samyak-saṃbodhi[, but he has not yet]. Now he protects my teachings. He also will protect the store of the teachings of future Buddhas, teach Bodhisattvas, and cause them to attain [Anuttara-samyak-saṃbodhi], according to his original vow. Therefore, now he has been assured of his future Buddhahood.”

Learning without practice is not enough.

And after all of the Śrāvakas are assured of future Buddhahood, we learn in Chapter 10, The Teacher of the Dharma, the power of faith in the Lotus Sutra:

Medicine-King! Do you see the innumerable gods, dragon-kings, yakṣas, gandharvas, asuras, garuḍas, kiṃnaras, mahoragas, men, and nonhuman beings, and [the four kinds of devotees:] bhikṣus, bhikṣuṇīs, upāsakas, and upāsikās, and those who are seeking Śrāvakahood or Pratyekabuddhahood or the enlightenment of the Buddha in this great multitude? If in my presence any of them rejoices, even on a moment’s thought, at hearing even a gāthā or a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma, I will assure him of his future Buddhahood, saying to him, ‘You will be able to attain Anuttara-samyak-saṃbodhi.’

The Buddha said to Medicine-King: “If after my extinction anyone rejoices, even on a moment’s thought, at hearing even a gāthā or a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma, I also will assure him of his future attainment of Anuttara-samyak-saṃbodhi.”

All of those who “keep, read, recite, expound and copy even a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma” are in fact Bodhisattvas, messengers sent by the Buddha:

Medicine-King, know this! They should be considered to have given up the rewards of their pure karmas and appeared in the evil world after my extinction in order to expound this sūtra out of their compassion towards all living beings. The good men or women who expound even a phrase of the Sūtra of the Lotus Flower of the Wonderful Dharma even to one person even in secret after my extinction, know this, are my messengers. They are dispatched by me. They do my work. It is needless to say this of those who expound this sūtra to many people in a great multitude.

And in gāthās:

Anyone who keeps
The Sūtra of the Lotus Flower of the Wonderful Dharma,
Know this, has compassion towards all living beings
Because he is my messenger.

Anyone who keeps
The Sūtra of the Lotus Flower of the Wonderful Dharma
Should be considered to have given up his pure world and come here
Out of his compassion towards all living beings.

Know that he can appear wherever he wishes!
He should be considered
To have appeared in this evil world
In order to expound the unsurpassed Dharma.

And again:

Anyone who keeps this sūtra in the future
Should be considered
To have been dispatched by me
To the world of men in order to do my work.

Day 14 ends with the declaration:

Medicine-King! I will tell you.
The Sūtra of the Lotus Flower of the Wonderful Dharma
Is the most excellent sūtra
That I have ever expounded.