Day 12 concludes Chapter 7, The Parable of the Magic City, and completes the Third Volume of the Lotus Sutra

Great-Universal-Wisdom-Excellence Buddha assents to the appeals from the Brahman-heavenly-kings of the worlds of the ten quarters and also by the sixteen princes:

The Buddha said, ‘This is suffering. This is the cause of suffering. This is extinction of suffering. This is the Way to extinction of suffering.’

Then he expounded the teaching of the twelve causes, saying, ‘Ignorance causes predisposition. Predisposition causes consciousness. Consciousness causes name-and-form. Name-and-form causes the six sense organs. The six sense organs cause impression. Impression causes feeling. Feeling causes craving. Craving causes grasping. Grasping causes existence. Existence causes birth. Birth causes aging-and-death, grief, sorrow, suffering and lamentation. When ignorance is eliminated, predisposition is eliminated. When predisposition is eliminated, consciousness is eliminated. When consciousness is eliminated, name-and-form is eliminated. When name-and-form is eliminated, the six sense organs are eliminated. When the six sense organs are eliminated, impression is eliminated. When impression is eliminated, feeling is eliminated. When feeling is eliminated, craving is eliminated. When craving is eliminated, grasping is eliminated. When grasping is eliminated, existence is eliminated. When existence is eliminated, birth is eliminated. When birth is eliminated, aging-and-death, grief, sorrow, suffering and lamentation are eliminated.’

But the 16 young princes, who renounced the world and became śrāmaṇeras, wanted more than the lessons for Śrāvakas:

They said to the Buddha simultaneously, ‘World-Honored One! All these Śrāvakas of great virtue, many thousands of billions in number, have already done [what they should do]. World-Honored One! Expound to us the teaching of Anuttara-samyak-saṃbodhi! If we hear that teaching, we will study and practice it. World-Honored One! We wish to have the insight of the Tathāgata. You know what we have deep in our minds.’

The princes had to wait 20,000 kalpas, but Great-Universal-Wisdom-Excellence Buddha eventually “expounded to the four kinds of devotees the sūtra of the Great Vehicle called the ‘Lotus Flower of the Wonderful Dharma, the Dharma for Bodhisattvas, the Dharma Upheld by the Buddhas’ ” and then retired to a quiet room for 84,000 kalpas. The sixteen Bodhisattva-śrāmaṇeras each sat on a seat of the Dharma, expounded the Sūtra of the Lotus Flower of the Wonderful Dharma and saved six hundred billion nayutas of living beings. “They showed them the Way, taught them, benefited them, caused them to rejoice and to aspire for Anuttara-samyak-saṃbodhi.”

I was one of the sixteen śrāmaṇeras.
You were among those to whom I expounded the Dharma.
Therefore, I now lead you with expedients
To the wisdom of the Buddha.

Because I taught you in my previous existence,
I expound the Sūtra of the Lotus Flower of the Wonderful Dharma
In order to lead you into the Way to Buddhahood.
Think it over! Do not be surprised! Do not be afraid!

The Parable of the Magic City can be read here.

The Buddhas expound the teaching of the Three Vehicles
Only as an expedient.
There is only the One Buddha-Vehicle.
The two [vehicles] were taught only as resting places.