An important lesson from the very start of Chapter 17 is that the benefits of the Lotus Sutra are deeply tied to our first moment of faith, not to our subsequent practice. The Buddha says in gāthās:

“With these merits of concentration of his mind,
He sought unsurpassed enlightenment, saying:
‘I will complete all these dhyāna-concentrations,
And obtain the knowledge of all things.’

“He performed
The meritorious practices
As previously stated
For hundreds of thousands of billions of kalpas.

“The good men or women who believe my longevity,
Of which I told you,
Even at a moment’s thought
Will be able to obtain more merits than he.”

That’s not to say study and practice are unimportant. As the Buddha explains:

“Those who have firm faith,
And who are pure and upright,
And who hear much and memorize all teachings,
And who understand my words
According to their meaning,
Will have no doubts [about my longevity].”

But that first moment of faith is vital. As Nichiren writes in “Shishin Gohon-shō, The Four Depths of Faith and Five Stages of Practice”:

“In the Annotations on the Words and Phrases of the Lotus Sutra, Miao-lé writes: ‘The single moment of understanding by faith is foremost of the practices in the essential section.’ The first of the four depths of faith in the time when the sutra was taught is the single moment of understanding by faith and the first of the five stages of practice after the Buddha’s passing away is the stage of rejoicing. Within these two can be found all 100 realms, 1,000 aspects, and 3,000 modes of existences as if in a treasure chest. They are the gate out of which all the Buddhas of all time and space emerge.”

Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page101

This single moment of understanding by faith is essential and is to be cherished. Attempting to do too much too quickly will only prove detrimental. As Nichiren warns:

“Fascicle nine of the Words and Phrases of the Lotus Sutra says, ‘The beginner is afraid that getting drawn into the myriad activities that are supporting conditions will hinder their practice of right action. At this time, they should solely uphold this sutra which is the best kind of offering. By dispensing with other matters in order to uphold the principle they will gain enormous benefit.’

“This commentary says that the supporting conditions are the first five of the six bodhisattva practices. A beginner who tries to practice them as well will hinder his own right action of faith. For instance, if a small boat overloaded with treasure tries to cross the ocean, both the boat and the treasure will sink. The phrase ‘solely uphold this sutra’ does not even refer to the whole sutra but only to upholding the daimoku, not any other passages.”

Shishin Gohon-shō, The Four Depths of Faith and Five Stages of Practice, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 105

We need not rush to perfect our practice. We should instead seek to deepen our faith.

Chapter 16, the Duration of the Life of the Tathāgata, is without a doubt the most important in the Lotus Sutra. Therefore, it is no surprise that we learn in Chapter 17 that “Anyone who hears that my life is so long, and understands it by faith even at a moment’s thought, will be able to obtain innumerable merits.’ ”

It is Chapter 17 which establishes how to be true practitioners. As explained in Two Buddhas Seated Side by Side:

“Zhiyi enumerated ‘four stages of faith’ and ‘five stages of practice’ of the Lotus Sūtra. The four stages of faith are (1) to arouse even a single thought of willing acceptance (also translated as “a single moment’s faith and understanding”); (2) to understand the intent of the sūtra’s words; (3) to place deep faith in the sūtra and expound it widely for others; and (4) to perfect one’s own faith and insight. The “five stages of practice” are (1) to rejoice on hearing the Lotus Sūtra; (2) to read and recite it; (3) to explain it to others; (4) to practice it while cultivating the six perfections; and (5) to master the six perfections. …

“Within these two models of the path, Nichiren focused on the first stage of faith, arousing a single moment’s faith and understanding, and the first stage of practice, rejoicing on hearing the Lotus Sūtra.

The merit of generating this faith is immeasurable, as Nikkyō Niwano explains in Buddhism for Today:

“In brief, the Buddha teaches us that if we establish the basic idea of faith, we can infinitely generate the power both to deepen our own faith and to extend it to others. He also teaches us that we can expect to surely gain the supreme merit of attaining Perfect Enlightenment in the future if we thoroughly devote ourselves to deepening our own faith. …

“A person earns or loses money; he falls in love or is disappointed in love; he rises to a higher position in time or he loses his job because of a trifling mistake; he brings up his child successfully or loses it. If we pass through life in this way with no purpose, merely repeating vain feelings of joy and sorrow, even though each moment seems to be substantial and important, we will have an inexpressible sense of emptiness upon looking back over our life. But if our life has the strong backbone of a righteous faith running through it, and if we have a firm belief that we can advance to Perfect Enlightenment step by step even though life has its apparent ups and downs, its various joys and sorrows, we will be able to pass easily through whatever hardships may come, however long life’s journey may be and however many rebirths it may entail.”

As the Buddha promises:

“It cannot be that the good man who obtained merits by understanding my longevity by faith even at a moment’s thought falters in walking the Way to Anuttara-samyak-saṃbodhi.”