Shakuson (Shakyamuni) made various preachings during his life of 40 years, which can be summarized into three: for shomon, engaku, and bosatsu.
釈尊はその生涯40年余りに渡り様々な教えを説いたが、それを要約すると声聞・縁覚・菩薩のために分けてその教えを説いた。