Kabbalah do Diwrej ha-jamim I 28:9

A person who trembles because of Torah, which is Balance, then Torah comes out from that person, one such has a Higher Balance, and because of this not all fears are the same. There is fear of God which comes due to God's Kingship, which includes all the mitzvot of the Torah, because there is fear that comes because of Torah, which is the middle pillar, and this is [the name] Havay"ah. In that way the masters of the Mishnah said: "Torah is great because it leads to action" (cf. Kiddushin 40b), because if a person does not know Torah, and the reward for the mitzvot, and the punishments for the transgressions, and who created Torah and who gave it to Israel, how will that person actually fear and observe the mitzvot? And in that vein David said to Shlomo his son "know the God of your father and serve God." (I Chron. 28:9)