Day 15 concludes Chapter 10, The Teacher of the Dharma, and opens Chapter 11, Beholding the Stūpa of Treasures.

I am always happy and my faith deepened when I finish this day’s portion of the Lotus Sutra. To begin:

Medicine-King, know this! Anyone who copies, keeps, reads and recites this sutra, makes offerings to it, and expounds it to others after my extinction, will be covered by my robe. He also will be protected by the present Buddhas of the other worlds. He will have the great power of faith, the power of vows, and the power of roots of good. Know this! He will live with me. I will pat him on the head.

There is no enlightenment without the Lotus Sutra:

Although many laymen or monks will practice the Way of Bodhisattvas, they will not be able to practice it satisfactorily, know this, unless they see, hear, read, recite, copy or keep this Sutra of the Lotus Flower of the Wonderful Dharma or make offerings to it. If they hear this sutra, they will. Anyone who, while seeking the enlightenment of the Buddha, sees or hears this Sutra of the Lotus Flower of the Wonderful Dharma, and after hearing it, understands it by faith and keeps it, know this, will approach Anuttara-samyak-sambodhi.

Without the Lotus Sutra, the Bodhisattva practices are like digging in dry dirt looking for water.

Why is that? It is because Anuttara-samyak-sambodhi which all the Bodhisattvas [should attain] is expounded only in this sutra. This sutra opens the gate of expedients and reveals the seal of the truth. The store of this Sutra of the Lotus Flower of the Wonderful Dharma is sound and deep. No one can reach its core. Now I show it to the Bodhisattvas in order to teach them and cause them to attain [Anuttara-samyak-sambodhi].

This quote is the first text I highlighted in the Lotus Sutra:

Medicine-King! How should the good men or women who live after my extinction expound this Sutra of the Lotus Flower of the Wonderful Dharma to the four kinds of devotees when they wish to? They should enter the room of the Tathagata, wear the robe of the Tathagata, sit on the seat of the Tathagata, and then expound this sutra to the four kinds of devotees. To enter the room of the Tathagata means to have great compassion towards all living beings. To wear the robe of the Tathagata means to be gentle and patient. To sit on the seat of the Tathagata means to see the voidness of all things. They should do these [three] things and then without indolence expound this Sutra of the Lotus Flower of the Wonderful Dharma to Bodhisattvas and the four kinds of devotees.

And in gathas:

If you wish to expound this sutra,
Enter the room of the Tathagata,
Wear the robe of the Tathagata,
Sit on the seat of the Tathagata,
[And after doing these three things,]
Expound it to people without fear!

To enter the room of the Tathagata means to have great compassion.
To wear his robe means to be gentle and patient.
To sit on his seat means to see the voidness of all things.
Expound the Dharma only after you do these [three] things!

From my earliest days as a Buddhist, I had a special appreciation for the arrival of Many Treasures in his giant stupa. Even before I understood the purpose of his visit, I saw it as fundamental to Buddhism. Unlike a finger of some god reaching down and touching mankind, Buddhism springs from within and rises skyward just as the lotus blossom floats above a muddy lagoon.

Thereupon a loud voice of praise was heard from within the stupa of treasures:

Excellent, excellent! You, Sakyamuni, the World-Honored One, have expounded to this great multitude the Sutra of the Lotus Flower of the Wonderful Dharma, the Teaching of Equality, the Great Wisdom, the Dharma for Bodhisattvas, the Dharma Upheld by the Buddhas. So it is, so it is. What you, Sakyamuni, the World-Honored One, have expounded is all true.