22:7

ואחר יאכל מן הקדשים [AND WHEN THE SUN IS DOWN HE SHALL BE CLEAN] AND MAY AFTERWARDS EAT OF HOLY THINGS — This is interpreted in Treatise Jebamoth (74b) to have reference to the heave-offering (not to holy things of every description): that he (a priest who was unclean and has bathed) is permitted to eat it as soon as the sun has set.

22:30 

אני ה׳ I AM THE LORD — Know Who it is that has decreed this matter, and let it, therefore, not be a light thing in your eyes!

22:31

ושמרתם — This implies the study of the commandments,

 ושמרתם. זוֹ הַמִּשְׁנָה:

22:32

ולא תחללו. לַעֲבֹר עַל דְּבָרַי מְזִידִין; מִמַּשְׁמָע שֶׁנֶּאֱמַר וְלֹא תְחַלְּלוּ מַה תַּ"לֹ וְנִקְדַּשְׁתִּי? מְסֹר עַצְמְךָ וְקַדֵּשׁ שְׁמִי. יָכוֹל בְּיָחִיד, תַּ"לֹ בתוך בני ישראל; וּכְשֶׁהוּא מוֹסֵר עַצְמוֹ יִמְסֹר עַצְמוֹ עַל מְנָת לָמוּת, שֶׁכָּל הַמּוֹסֵר עַצְמוֹ עַל מְנָת הַנֵּס, אֵין עוֹשִֹׁין לוֹ נֵס, שֶׁכֵּן מָצִינוּ בַחֲנַנְיָה מִישָׁאֵל וַעֲזַרְיָה שֶׁלֹּא מָסְרוּ עַצְמָן עַל מְנָת הַנֵּס, שֶׁנֶּאֱמַר (דניאל נ'), "וְהֵן לָא יְדִיעַ לֶהֱוֵא לָךְ מַלְכָּא" וְגוֹ', מַצִּיל וְלֹא מַצִּיל — "יְדִיעַ לֶהֱוֵא לָךְ" וְגו' (ספרא):

ולא תחללו YE SHALL NOT PROFANE [MY HOLY NAME], by transgressing My commands willfully. Having regard to what is implied in the statement: You shall not profane [My holy name] (viz., that it must be hallowed), what is the meaning of ונקדשתי? But, this implies a positive act of sanctification: Abandon yourself to martyrdom and hallow My name! I might think that this command applies even to the Israelite when he is alone (i. e., when no other Israelites are present when the heathen bids him transgress a Divine command)! Scripture, however, states: בתוך בני ישראל [AND I SHALL BE SANCTIFIED] AMIDST THE CHILDREN OF ISRAEL. — And when offering oneself to martyrdom, one should offer himself with the firm determination (lit., under the condition) to die if necessary, for he who abandons himself on condition (i. e. cherishing the hope) that God will not exact the sacrifice and that a miracle will happen to save him will have no miracle wrought for him; for thus we find in the case of Chananyah, Mishael and Azariah that they did not offer themselves for martyrdom expecting a miracle, as it is said (Daniel 3:17, 18) “[And God whom we serve is able to deliver us from the burning fiery furnace and He will deliver us out of thy hand, O king]. But if not, be it known unto thee that we will not serve thy gods etc. — Whether He saves us or whether he does not save, “be it known unto thee etc.” (Sifra, Emor, Chapter 9 5)