The Larger Sukhavativyuha is the longest of the three basic Sutras of the Pure Land School.
It starts with a monk called Dharmakara, who practiced Buddhist Dharma under Tathagata Lokesvararaja. The monk made 48 great vows to save all sentient beings. Upon the fulfilment of these vows, he would create a Pure Land in the west called Sukhavati, which literally means the Land of Ultimate Bliss. He himself thus became the Buddha Amitabha.
Amongst the 48 vows, the most important one is that, those who recite the name Amitabha singlmindedly will be reborn in Sukhavati after death and there become the Buddhas.
The Sutra also states, in details, what the beings and the world in Sukhavati are different from ours, and different types of rebirth to Sukhavati for different levels of beings, etc.
1. In the first part all the Buddhas disciples are in attendance.
2. Past Buddhas are recognized.
3. The Vows are discussed: The select vow is the 18th Vow=
“O Bhagavat, if those beings who have directed their thought towards the highest perfect knowledge in other worlds, and who, after having heard my name, when I have obtained Bodhi , have meditated on me with serene thoughts; if at the moment of their death, after having approached them, surrounded by an assembly of Bhikkhus, I should not stand before them, worshiped by them, that is, so that their thoughts should not be troubled, then may I not obtain the highest perfect knowledge.
4. Brahmanas, Kshatriyas, ministers, householders, and merchants. In the same manner they were established in the sovereignty of Jambudvipa, and they were established in the character of Chakravartins, Lokapalas, Sakras, Suyamas, Sutushitas, Sunirmitas,Vasavartins, Devaragas, and Mahabrahmans.
5. This splendor of the Arya is pure, great, producing bodily pleasure, happiness of mind, producing happiness, delight, and joy for men and not-men, Kinnaras, Mahoragas, Garudas, Gandharvas, Yakshas, Nagas, Asuras, and Devas; and producing the pleasure of beings of good disposition.
6. The Seven gems: Mindfulness (sati) i.e. to recognize the dhammas (phenomena or reality, two ways one can translate “dhamma”).
Investigation (dhamma vicaya) of dhammas.
Energy (viriya) also determination
Joy or rapture (pīti)
Relaxation or tranquility (passaddhi) of both body and mind
Concentration, clear awareness (samādhi) a calm, one-pointed state of concentration of mind, or clear awareness
Equanimity (upekkha), to be fully aware of all phenomena without being lustful or averse towards them. These are seven factors of enlightenment. Repesented by seven Jewels=old, silver, beryl, agate, ruby, coral, and amber, and also moon-bright pear
7. Sumeru, namely, the Yamadevas, Tushitas, Nirmanaratis, Paranirmitavasavartins, Brahmakayikas, Brahmapurohitas, Mahabrahmans, as far as the Akanishthas?’ Cosmological Buddhist Heavens.
8. Bodhisattva Avalokitesvara (Kannon/Kwannon:Buddha of mercy and compassion)), and the second is Mahasthamaprapta (Bodhisattva of wisdom).
9. The Buddha only knows the virtues of a Buddha; but not gods, Nagas, Asuras, Yakshas, and Sravakas; even for Anekabuddhas there is no such way, as when the knowledge of a Buddha is being manifested. These are all states of beings attributed to behaviors of people.
Buddhism, and Mahayana are expressed in Upaya, expedient means. The Buddhas and other items are not existent but portions of the mind. The Four Kings, The Mountains such a Sumeru. The Heaven such as Tusita Heaven. These do not exist as in Christianity. But expressed realms of existence symbolically of the Bidhi Mind.
There are 35 Confessed Buddhas. http://tonglen.oceandrop.org/35_Buddhas.htm
Simplistically, The Amida Buddha is The Buddha of Infinite Life and Light (Wisdom and Compassion.) The Pure Land is the Awakening of Bodhi Mind to Buddha.
One obtains true faith, enters the Pure Land (Nirvana), and returns. One transforms from a Bodhisattva to Buddha. The Sutra is a embellished story teaching the features of Buddha mind.
True Faith may be seen this way with Buddha names. Buddha, Self-existent, Lord of Law (Dharmaraja), Nayaka, Vinayaka, Caravan Leader, Jina (Victorious One), the Master-giver of Dharma, The Teacher, Master of the Dharma, the Lord of the World, the consoler, the loving-regarder [cf. Avalokiteshvara,] the Hero, the champion, the victorious one in conflict, Light of the World, Illumination of the Knowledge of True Wisdom, The dispelled of the darkness of ignorance, Illumination of the Great Torch, Great Physician, Great Seer, the Healer, Attained of the Great Vehicle (Mahayana), Lord of all Dharma, the Ruler, Monarch of All Worlds, the Sovereign, Lord of all wisdom, the wise, the destroyer of the pride of all disputers, the omniscient, the Arhat, Possessor of Perfect Knowledge, the Great Buddha, Lord of Saints, The Victorious, the Perfect Buddha, Sugata, the wise one who fulfills the wishes of all beings, The ruler of the world, bearer of the world, master of the world, sovereign of the world, teacher of the world, preceptor of the world, The Fount of Nectar, the powerful luminary, Bringer of all virtue and all real wealth, possessor of perfect excellence and all good qualities, the guide on the road of wisdom who shows the way to Nirvana, Tathagata without stain, without attachment, without uncertainty.
Lights of Amida Buddha= Buddhas illuminates one Buddha-land. “For this reason, Amitayus is called by the following names: the Buddha of Infinite Light, the Buddha of Boundless Light, the Buddha of Unhindered Light, the Buddha of Incomparable Light, the Buddha of the Light of the King of Flame, the Buddha of Pure Light, the Buddha of the Light of Joy, the Buddha of Light of Wisdom, the Buddha of Unceasing Light, the Buddha of Inconceivable Light, the Buddha of Ineffable Light, and the Buddha of the Light Outshining the Sun and the Moon. All mind aspects of the illuminated mind of Buddha.