וַֽיְהִי֙ דְּבַר־יְהוָ֔ה אֶֽל־יִרְמְיָ֖הוּ לֵאמֹֽר׃
And the word of the LORD came to Jeremiah, saying:
Pirkei Avot
Shimon the Righteous was one of the last of the men of the great assembly. He used to say: the world stands upon three things: the Torah, the Temple service, and the practice of acts of piety.