This week’s parsha teaches us the mitzva of Kiddush Hashem, as the verse says “...And I shall be sanctified among Bnei Yisroel...” (Vayikra 22:32)
The Rosh in his commentaries on Brachos (ch. 7, siman 20) writes: Our sages have taught in a Braisa (Berachos 47b): “Once, Rebbi Eliezer entered a shul and did not find a minyan there (i.e., there were only 9 men). R. Eliezer then freed his slave and he completed the minyan.” But how could he have done that?! Rav Yehuda has taught that someone who frees his slave transgresses a commandment, as it says, “You should enslave them forever”! The answer is that a communal mitzva is different! [Meaning to say] that a communal mitzva is significant, as it says, “And I shall be sanctified among Bnei Yisroel.” (Vayikra 22:32) - the positive mitzva of Kiddush Hashem, and even if there is only a rabbinic ordinance such as listening to Kedusha and Borchu.
The Mishna Berura (125:4) also writes: One needs to have intent especially during Kedusha to sanctify Hashem’s name. And in that merit, Hashem will rest upon him a spirit of holiness from Above. And he should have in mind to fulfill the verse, “And I shall be sanctified among Bnei Yisroel.” The Ariza”l was very careful about this.
