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.