Being the Shechina

The Rambam says that someone who gives to the poor is like the "Shechina"
What is the Shechina? The Schina is the acts and powers of God's care for the future of the world.
- Because the way God prepares for the future is often hidden, it is "in exile"
- When a person cares for the future of the world, they are acting like the Schechina.
- A poor person is like the Shecina, because their value is hidden.
Thus:
- People who give charity or learn torah are with the Shechina.
- People who are down-trodden are like the Shechina in exile.
- Because Israel cares for the future of the world, it is like the Shechina
- Israel's two facets, Israel and Jacob represent both of these ideas, the giver of charity is Israel, and the taker is Jacob.

מוּטָב לָאָדָם לְהַרְבּוֹת בְּמַתְּנוֹת אֶבְיוֹנִים מִלְּהַרְבּוֹת בִּסְעֻדָּתוֹ וּבְשִׁלּוּחַ מָנוֹת לְרֵעָיו. שֶׁאֵין שָׁם שִׂמְחָה גְּדוֹלָה וּמְפֹאָרָה אֶלָּא לְשַׂמֵּחַ לֵב עֲנִיִּים וִיתוֹמִים וְאַלְמָנוֹת וְגֵרִים. שֶׁהַמְשַׂמֵּחַ לֵב הָאֻמְלָלִים הָאֵלּוּ דּוֹמֶה לַשְּׁכִינָה שֶׁנֶּאֱמַר (ישעיה נז טו) "לְהַחֲיוֹת רוּחַ שְׁפָלִים וּלְהַחֲיוֹת לֵב נִדְכָּאִים":

Mishneh Torah, Scroll of Esther and Hanukkah 2:17

It is preferable for a person to be more liberal with his donations to the poor than to be lavish in his preparation of the Purim feast or in sending portions to his friends. For there is no greater and more splendid happiness than to gladden the hearts of the poor, the orphans, the widows, and the converts.
One who brings happiness to the hearts of these unfortunate individuals resembles the Divine Presence, which Isaiah 57:15 describes as having the tendency "to revive the spirit of the lowly and to revive those with broken hearts."

ישעיהו נ״ז:ט״ו

כִּי֩ כֹ֨ה אָמַ֜ר רָ֣ם וְנִשָּׂ֗א שֹׁכֵ֥ן עַד֙ וְקָד֣וֹשׁ שְׁמ֔וֹ מָר֥וֹם וְקָד֖וֹשׁ אֶשְׁכּ֑וֹן וְאֶת־דַּכָּא֙ וּשְׁפַל־ר֔וּחַ לְהַחֲיוֹת֙ ר֣וּחַ שְׁפָלִ֔ים וּֽלְהַחֲי֖וֹת לֵ֥ב נִדְכָּאִֽים׃

Isaiah 57:15

For thus says the high and lofty One that inhabits eternity, whose name is Holy; I dwell on high and in a holy place, yet with him also that is of a contrite and humble spirit, to revive the spirit of the humble, and to revive the heart of the contrite ones.

מגילה כ״ט א:ד׳

תַּנְיָא, רַבִּי שִׁמְעוֹן בֶּן יוֹחַי אוֹמֵר: בּוֹא וּרְאֵה כַּמָּה חֲבִיבִין יִשְׂרָאֵל לִפְנֵי הַקָּדוֹשׁ בָּרוּךְ הוּא, שֶׁבְּכָל מָקוֹם שֶׁגָּלוּ — שְׁכִינָה עִמָּהֶן. גָּלוּ לְמִצְרַיִם — שְׁכִינָה עִמָּהֶן, שֶׁנֶּאֱמַר: ״הַנִּגְלֹה נִגְלֵיתִי לְבֵית אָבִיךָ בִּהְיוֹתָם בְּמִצְרַיִם וְגוֹ׳״. גָּלוּ לְבָבֶל — שְׁכִינָה עִמָּהֶן, שֶׁנֶּאֱמַר: ״לְמַעַנְכֶם שֻׁלַּחְתִּי בָבֶלָה״. וְאַף כְּשֶׁהֵן עֲתִידִין לִיגָּאֵל — שְׁכִינָה עִמָּהֶן, שֶׁנֶּאֱמַר: ״וְשָׁב ה׳ אֱלֹהֶיךָ אֶת שְׁבוּתְךָ״. ״וְהֵשִׁיב״ לֹא נֶאֱמַר, אֶלָּא ״וְשָׁב״. מְלַמֵּד שֶׁהַקָּדוֹשׁ בָּרוּךְ הוּא שָׁב עִמָּהֶן מִבֵּין הַגָּלִיּוֹת.

Megillah 29a:4

§ It is taught in a baraita: Rabbi Shimon ben Yoḥai says: Come and see how beloved the Jewish people are before the Holy One, Blessed be He. As every place they were exiled, the Divine Presence went with them. They were exiled to Egypt, and the Divine Presence went with them, as it is stated: “Did I reveal myself to the house of your father when they were in Egypt?” (I Samuel 2:27). They were exiled to Babylonia, and the Divine Presence went with them, as it is stated: “For your sake I have sent to Babylonia” (Isaiah 43:14). So too, when, in the future, they will be redeemed, the Divine Presence will be with them, as it is stated: “Then the Lord your God will return with your captivity” (Deuteronomy 30:3). It does not state: He will bring back, i.e., He will cause the Jewish people to return, but rather it says: “He will return,” which teaches that the Holy One, Blessed be He, will return together with them from among the various exiles.

ספר הזהר, יתרו כ״ג:תי״ז

מִכָּאן תָּנֵינָן, מַאן דְּנָזִיף בְּמִסְכְּנָא, נָזִיף בִּשְׁכִינְתָּא, דִּכְתִּיב וְאֶת דַּכָּא וּשְׁפַל רוּחַ. וּכְתִיב (משלי כ״ב:כ״ג) כִּי יְיָ' יָרִיב רִיבָם וְגוֹ'. בְּגִין דְּאַפּוֹטְרוֹפָּא דִּלְהוֹן תַּקִּיפָא, וְשַׁלִּיטָא עַל כֹּלָּא, דְּלָא אִצְטְרִיךְ סַהֲדֵי, וְלָא אִצְטְרִיךְ לְדַיָּינָא אַחֲרָא, וְלָא נָטִיל מַשְׁכּוֹנָא, כִּשְׁאַר דַּיָּינָא. וּמַה מַשְׁכּוֹנָא נָטִיל, נִשְׁמָתִין דְּבַר נָשׁ, דִּכְתִּיב וְקָבַע אֶת קוֹבְעֵיהֶם נָפֶשׁ.

Zohar, Yitro 23:417

417. Hence, we have learned that he who wrongs a poor man wrongs the Shechinah, as it is written, "Yet with him also that is of a contrite and humble spirit," and also, "For Hashem will plead their cause" (Mishlei 22:23). For Hashem is their Protector and He rules everywhere and needs no witnesses, and no other judge. He does not accept pledges like other judges, except those of the souls, as it is written, "And rob of life those who rob them" (Mishlei 22:23).

ספר הזהר, ויחי א׳:י״ד

וּמִלָּה דְּלֹא יַעֲקֹב יֵאָמֵר עוֹד שִׁמְךָ כִּי אִם יִשְׂרָאֵל, כַּד אִתְפְּרִישׁ בִּסְבִירֵיהּ. יִשְׂרָאֵל יַעֲקֹב עִלָּאָה דָּא מִן דָּא, וּבְגִינֵהוֹן הֲוָה חוּטְרָא דְמשֶׁה גְּלִיפָא מִתְּרֵין סִטְרוֹי מִשְׁמֵיהּ קַדִּישָׁא, חַד רַחֲמֵי בְּדִינָא, וְחַד דִּינָא בְּדִינָא.

Zohar, Vayechi 1:14

14. The words, "Your name shall be called no more Jacob but Israel," when clearly understood, mean that Israel is superior to Jacob. And it is according to their meaning that the staff of Moses was engraved with the Holy Name on both sides, the one of Mercy through Judgment, and the other Judgment through Judgment.

Some Extra Learning

משנה תורה, הלכות מגילה וחנוכה ב׳:י״ח

כָּל סִפְרֵי הַנְּבִיאִים וְכָל הַכְּתוּבִים עֲתִידִין לִבָּטֵל לִימוֹת הַמָּשִׁיחַ חוּץ מִמְּגִלַּת אֶסְתֵּר וַהֲרֵי הִיא קַיֶּמֶת כַּחֲמִשָּׁה חֻמְּשֵׁי תּוֹרָה וְכַהֲלָכוֹת שֶׁל תּוֹרָה שֶׁבְּעַל פֶּה שֶׁאֵינָן בְּטֵלִין לְעוֹלָם. וְאַף עַל פִּי שֶׁכָּל זִכְרוֹן הַצָּרוֹת יְבֻטַּל שֶׁנֶּאֱמַר (ישעיה סה טז) "כִּי נִשְׁכְּחוּ הַצָּרוֹת הָרִאשׁוֹנוֹת וְכִי נִסְתְּרוּ מֵעֵינִי". יְמֵי הַפּוּרִים לֹא יִבָּטְלוּ שֶׁנֶּאֱמַר (אסתר ט כח) "וִימֵי הַפּוּרִים הָאֵלֶּה לֹא יַעַבְרוּ מִתּוֹךְ הַיְּהוּדִים וְזִכְרָם לֹא יָסוּף מִזַּרְעָם":

Mishneh Torah, Scroll of Esther and Hanukkah 2:18

All the books of the Prophets and all the Holy Writings will be nullified in the Messianic era, with the exception of the Book of Esther. It will continue to exist, as will the five books of the Torah and the halachot of the Oral Law, which will never be nullified.
Although all memories of the difficulties endured by our people will be nullified, as Isaiah 65:16 states: "For the former difficulties will be forgotten and for they will be hidden from My eye," the celebration of the days of Purim will not be nullified, as Esther 9:28 states: "And these days of Purim will not pass from among the Jews, nor will their remembrance cease from their seed."