(כא) מִזְבַּ֣ח אֲדָמָה֮ תַּעֲשֶׂה־לִּי֒ וְזָבַחְתָּ֣ עָלָ֗יו אֶת־עֹלֹתֶ֙יךָ֙ וְאֶת־שְׁלָמֶ֔יךָ אֶת־צֹֽאנְךָ֖ וְאֶת־בְּקָרֶ֑ךָ בְּכָל־הַמָּקוֹם֙ אֲשֶׁ֣ר אַזְכִּ֣יר אֶת־שְׁמִ֔י אָב֥וֹא אֵלֶ֖יךָ וּבֵרַכְתִּֽיךָ׃ (כב) וְאִם־מִזְבַּ֤ח אֲבָנִים֙ תַּֽעֲשֶׂה־לִּ֔י לֹֽא־תִבְנֶ֥ה אֶתְהֶ֖ן גָּזִ֑ית כִּ֧י חַרְבְּךָ֛ הֵנַ֥פְתָּ עָלֶ֖יהָ וַתְּחַֽלְלֶֽהָ׃
(21) Make for Me an altar of earth and sacrifice on it your burnt offerings and your sacrifices of well-being, your sheep and your oxen; in every place where I cause My name to be mentioned I will come to you and bless you. (22) And if you make for Me an altar of stones, do not build it of hewn stones; for by wielding your tool upon them you have profaned them.
) ותחללה. הָא לָמַדְתָּ שֶׁאִם הֵנַפְתָּ עָלֶיהָ בַּרְזֶל חִלַּלְתָּ, שֶׁהַמִּזְבֵּחַ נִבְרָא לְהַאֲרִיךְ יָמָיו שֶׁל אָדָם וְהַבַּרְזֶל נִבְרָא לְקַצֵּר יָמָיו שֶׁל אָדָם, אֵין זֶה בַּדִּין שֶׁיּוּנַף הַמְקַצֵּר עַל הַמַּאֲרִיךְ (מכילתא). וְעוֹד שֶׁהַמִּזְבֵּחַ מֵטִיל שָׁלוֹם בֵּין יִשְׂרָאֵל לַאֲבִיהֶם שֶׁבַּשָּׁמַיִם, לְפִיכָךְ לֹא יָבֹא עָלָיו כּוֹרֵת וּמְחַבֵּל; וַהֲרֵי דְּבָרִים קַל וָחֹמֶר, וּמָה אֲבָנִים שֶׁאֵינָן רוֹאוֹת וְלֹא שׁוֹמְעוֹת וְלֹא מְדַבְּרוֹת, עַל יְדֵי שֶׁמְּטִילוֹת שָׁלוֹם אָמְרָה תּוֹרָה וְלֹא תָנִיף עֲלֵיהֶם בַּרְזֶל, הַמֵּטִיל שָׁלוֹם בֵּין אִישׁ לְאִשְׁתּוֹ, בֵּין מִשְׁפָּחָה לְמִשְׁפָּחָה, בֵּין אָדָם לַחֲבֵרוֹ, עַל אַחַת כַּמָּה וְכַמָּה שֶׁלֹּא תְבוֹאֵהוּ פֻּרְעָנוּת (שם):
(4) ותחללה THEN THOU HAST PROFANED IT — Thus you may learn that if thou liftest up thy iron tool above it thou profanest it. The reason of this it, because the altar is created (its purpose is) to lengthen man’s days and iron has been created (one of its purposes is) to shorten man’s days, it is not right that an object which shortens man’s life should be lifted up above that which lengthens it (Mekhilta, Middoth 3:4). And a further reason it: because the altar makes peace between Israel and their Father in Heaven, and therefore there should not come upon it anything that cuts and destroys. Now, the following statement follows logically, à fortiori: How is it in the case of stones which cannot see nor hear nor speak? Because that they promote peace Scripture ordains, “Thou shalt not lift up against them any iron tool!” Then in the case of one who makes peace between a man and his wife, between family and family, between a man and his fellow, how much more certain is it that punishment will not come upon him (Mekhilta d'Rabbi Yishmael 20:22:2).