וַיַּכְנַ֣ע בֶּעָמָ֣ל לִבָּ֑ם כָּ֝שְׁל֗וּ וְאֵ֣ין עֹזֵֽר׃
Przeto zgnębił biedą ich serce, upadli, a nie było wybawcy.
Kli Yakar
But in the thanksgiving offering, there were both leavened and unleavened breads together. This is because the unleavened bread symbolizes that one has already humbled oneself with the toil of one’s heart, as it is written regarding the four who need to give thanks: and He humbled their heart with labor (Psalms 107:12). For the wicked are under the control of their hearts, etc. And our Sages interpreted the verse Whoever offers thanksgiving honors Me (Psalms 50:23) as referring to one who slaughters one’s evil inclination and confesses over it, etc. (Sanhedrin 43b). From there is proof that the slaughtering of the thanksgiving offering represents the slaughtering of the evil inclination. Therefore, one brings as a sign unleavened cakes that are clean from leaven. Nevertheless, one still needs the evil inclination for the continuation of the species, therefore there were also leavened cakes. And there were three unleavened cakes corresponding to one leavened cake, to nullify its existence by majority, because every person should divide their years into three parts with the threefold Torah: Scripture, Mishnah, and Talmud, and give the fourth part to the maintenance of one’s body.