Shemot (Exodus) Chapter 13

1The Lord spoke to Moses, saying,   אוַיְדַבֵּ֥ר יְהֹוָ֖ה אֶל־משֶׁ֥ה לֵּאמֹֽר:
2"Sanctify to Me every firstborn, every one that opens the womb among the children of Israel among man and among animals; it is Mine."   בקַדֶּשׁ־לִ֨י כָל־בְּכ֜וֹר פֶּ֤טֶר כָּל־רֶ֨חֶם֙ בִּבְנֵ֣י יִשְׂרָאֵ֔ל בָּֽאָדָ֖ם וּבַבְּהֵמָ֑ה לִ֖י הֽוּא:
every one that opens the womb: Heb. פֶּטֶר כָּל-רֶחֶם, which opened the womb first, [פֶּטֶר meaning to open] as “in The beginning of strife is like letting out (פּוֹטֵר) water” (Prov. 17:14); “ יַפְטִירוּ בְשָׂפָה, they will open their lips” (Ps. 22:8). — [from Mechilta, targumim]   פֶּטֶר כָל־רֶחֶם: שֶׁפָּתַח הָרֶחֶם תְּחִלָּה, כְּמוֹ: "פּוֹטֵר מַיִם רֵאשִׁית מָדוֹן" (משלי י"ז), וְכֵן "יַפְטִירוּ בְשָׂפָה" (תהלים כ"ב) – יִפְתְּחוּ שְׂפָתַיִם:
it is Mine: For Myself I have acquired them by smiting the firstborn of Egypt. — [from Mechilta]   לִי הֽוּא: לְעַצְמִי קָנִיתִי, עַל יְדֵי שֶׁהִכֵּיתִי בְכוֹרֵי מִצְרַיִם:
3Moses said to the people, "Remember this day, when you went out of Egypt, out of the house of bondage, for with a mighty hand, the Lord took you out of here, and [therefore] no leaven shall be eaten.   גוַיֹּ֨אמֶר משֶׁ֜ה אֶל־הָעָ֗ם זָכ֞וֹר אֶת־הַיּ֤וֹם הַזֶּה֙ אֲשֶׁ֨ר יְצָאתֶ֤ם מִמִּצְרַ֨יִם֙ מִבֵּ֣ית עֲבָדִ֔ים כִּ֚י בְּחֹ֣זֶק יָ֔ד הוֹצִ֧יא יְהֹוָ֛ה אֶתְכֶ֖ם מִזֶּ֑ה וְלֹ֥א יֵֽאָכֵ֖ל חָמֵֽץ:
Remember this day: This teaches us that we are to mention the Exodus from Egypt daily. — [from Mechilta]   זָכוֹר אֶת־הַיּוֹם הַזֶּה: לִמֵּד, שֶׁמַּזְכִּירִין יְצִיאַת מִצְרַיִם בְּכָל יוֹם:
4Today you are going out, in the month of spring.   דהַיּ֖וֹם אַתֶּ֣ם יֹֽצְאִ֑ים בְּחֹ֖דֶשׁ הָֽאָבִֽיב:
in the month of spring: Now do we not know in what month they went out? [Early editions read: Now did they not know in what month they went out?] Rather, this is what he [Moses] said to them, “See the lovingkindness that He bestowed upon you, that He took you out in a month in which it is suitable to go out, when there is neither heat nor cold nor rain,” and so it says: “He takes the prisoners out at the most opportune time (בַּכּוֹשָׁרוֹת) ” (Ps. 68:7), in the month when it is best suited (כָּשֵׁר) to go out. — [from Mechilta]   בְּחֹדֶשׁ הָֽאָבִֽיב: וְכִי לֹא הָיִינוּ יוֹדְעִין בְּאֵיזֶה חֹדֶשׁ? אֶלָּא כָּךְ אָמַר לָהֶם, רְאוּ חֶסֶד שֶׁגְּמַלְכֶם, שֶׁהוֹצִיא אֶתְכֶם בְּחֹדֶשׁ שֶׁהוּא כָשֵׁר לָצֵאת, לֹא חַמָּה וְלֹא צִנָּה וְלֹא גְּשָׁמִים, וְכֵן הוּא אוֹמֵר, "מוֹצִיא אֲסִירִים בַּכּוֹשָׁרוֹת" (תהלים ס"ח) – חֹדֶשׁ שֶׁהוּא כָשֵׁר לָצֵאת (מכילתא):