Midrash for Megillah 49:17

R. Chanina said: "Everything is in the hnds of Heaven (under God's control) except fear of Heaven, as is written (Deu. 10., 12) And now, Israel, what doth the Lord, thy God, require of thee, but to fear the Lord, thy God." Is fear of God a small matter? Behold! R. Chanina in the name of R. Simon b. Jochai said: "Nothing is in God's storehouse except the treasure of fear of Heaven, as it is said (Ib.) And now, Israel, what doth the Lord, thy God, require of thee, but to fear the Lord, thy God." Aye, for one like Moses it was indeed a small matter, as R. Chanina said: "It is similar to a man who is asked for a large vessel. If he has it, it appears small to him, but if he has it not, even a small one would look large to him."