The Tathagata knows and sees the appearance of the Three Worlds in accordance with reality:

The Tathagata knows and sees the appearance

of the Three Worlds in accordance with reality:

there is no Birth-and-Death,

whether backsliding or emerging;

likewise there is neither existence in the world

nor extinction; they are not real; they are not void,

they are not thus; they are not different.

It is not as the Three Worlds

see the Three Worlds. In such a matter as this

the Tathagata sees clearly

and is without error. -- Lotus Sutra Chapter 16 [Juryo-hon]

and

The masses of beings see the kalpas exhausted,

When they are burned by the great fires;

This land of mine is peaceful and secure;

Gods and humans ever fill it. corrects

and forests and various halls and pavilions,

With various types of jewels adorned; On the

jewelled trees many flowers and fruit, Wherein

the masses of beings take their pleasure

and rejoice. The gods strike the celestial drums,

Ever making instrumental music.

Raining mandara flowers. Scattering them

Over the Buddha and the great assemblies.

Though My Pure Land is not destroyed,

Yet the masses see it burned up,

Worrisome fears and agonizing sufferings

And such things all filling it up. These

beings of various sins, Because of the causes

and conditions of their evil karma, Though

they pass through asemkheyas of kalpas,

Do not hear the name of the Three Jewels.

Those who have performed merit,

Who are gentle and pliant, simple and upright,

Then all see my body.

Staying here, preaching the Dharma.

Sometimes for these masses I preach the

Buddha's Life is immeasurable. To those who

see the Buddha only after a long time, I preach

for them the Buddha is difficult to encounter.

The power of My Wisdom is like this;

The illumination of the Light of My Wisdom is

immeasurable; My Lifespan is immeasurable

kalpas; It is what I obtained by performing the

karmas for a long time. You those who have

wisdom, Do not produce doubts about this. You

should cut them off and cause them to end forever:

The Buddha's Words are true and not empty. -- Lotus Sutra Chapter 16 [Jiga-ge]

Nichiren:

"The sahā world Shakyamuni Buddha revealed in the “Life Span” chapter is the eternal pure land, impervious to the three calamities and to the cycle of the four kalpas. The Buddha neither has entered into extinction in the past nor will be born in the future. And the same is true of his disciples. This means that their lives are perfectly endowed with the three thousand worlds, that is, with the three realms of existence. The Buddha did not reveal this truth in the theoretical teaching, or the first fourteen chapters, of the Lotus Sutra because the time was not right and the people’s capacity was not yet developed." -- True Object of Worship