Tomoyasama
Certainly, in the sutras that have been handed down, it is difficult to understand those that only apply the Chinese sound of Sanskrit, and those that have been translated into Chinese from Sanskrit, etc., and even if you read those Japanese translations, you may not be sure.
However, originally, the teachings directly handed down by Shakyamuni were not expressed as they were, and the disciples compiled the teachings as “I heard this way” some time after Shakyamuni's fall, and it became a sutra.
Therefore, there is a possibility that the way meaning was captured by each disciple is also included, or there are also things that are explained to each individual's hesitation and suffering as counterfactual theories and convenience, and furthermore, there is also a possibility that the translator's way of capturing the meaning, arbitrary elements, etc. are included in that translation, so it is more difficult to know what true direct transmission is.
Of course, there are also basic doctrines of Buddhism that can be extracted as the greatest common denominator from among them.
Among them, the Four Holy Declarations and the Four Dharma Seals are, first and foremost, the essentials of Buddhism.
Therefore, if you first learn the basic teachings that underlie all the sutras, there are places where you can understand the positioning and convenient contents of each sutra.
Also, there are things that deal with the interpretation of the sutras, such as the Kaisen Sutra, etc., and in particular, Buddha preached the teachings three times as the “three-turn Dharma ring,” and there is also a method for understanding the sutras by roughly classifying them into those three (basic teachings of Buddhism/empty teachings such as the Heart Sutra, etc.) and teaching about spirituality and Buddhism.
Please use it as a reference.
Kawaguchi Hidetoshi Gassho