阿彌陀經疏 1.241

1.241

經曰：「於彼國土若已生、若今生、若當生」，第三釋遂志也。謂若已發願者謂過去，過去發願者已生也；若今發願者謂現在，現在發願者今生也；若當發願者謂未來，未來發願者當生也。

The sūtra says: '...in that land, they have either already been born, are now being born, or will be born.' Third, this explains fulfilling the aspiration. This means: those who have already made the vow refers to the past, and those who made the vow in the past have already been born; those who are now making the vow refers to the present, and those who make the vow in the present are now being born; those who will make the vow refers to the future, and those who will make the vow in the future will be born.