No grain-offering that you sacrifice to G-d may be made
leavened, for you must not burn up any leavening agents
or any sweet fruits as a fire-offering to G-d.
Leviticus 2:11
The latter half of this verse can be read literally as, “for you must not burn up anything that is wholly leavened or wholly sweet as a fire-offering to G-d.”
Based on this reading, Rabbi Shmuel of Lubavitch interpreted this verse homiletically: “One who is always sour (like leavening) or always sweet (like sweet fruits), without ever changing and showing signs of life, cannot be a fire-offering to G-d.”
We are not meant to be static; being alive means experiencing the full gamut of emotions in the process of spiritual growth.
--Daily Wisdom Volume 3