觀無量壽佛經義疏 3.207

3.207

"‘The wise person further instructs them to join their palms and clasp their hands, reciting: "Namo Amitābha Buddha." Because they recite the Buddha's name, they eradicate the sins of birth and death spanning fifty billion kalpas.’" The power of the sūtra titles and the Buddha's name is difficult to conceive. The number of kalpas of eradicated sins is cited in the text simply to indicate [a vast number]. Second, a transformation Buddha arrives to praise them, which has two parts: first, transformed beings arrive to welcome them; second, praising and receiving them. First, transformed beings arrive to welcome them.