These Breads are Leavened

This is unique that a portion of the breads for the Korban Todah were leavened. The Sforno explains that one that is required to bring this offering has been saved from a life-threatening situation. It is obvious that this person has fallen short in one’s behavior in some manner which led to the life-threatening situation. The Sforno attributes this to giving it to one’s evil inclination which is known as s'or sheb'isa, the leavening agent in the dough. Thus one brings leaven breads to atone.