Deuteronomy 6:5דברים ו׳:ה׳
You shall love your God יהוה with all your heart and with all your soul and with all your might.
וְאָ֣הַבְתָּ֔ אֵ֖ת יהוה אֱלֹהֶ֑יךָ בְּכׇל־לְבָבְךָ֥ וּבְכׇל־נַפְשְׁךָ֖ וּבְכׇל־מְאֹדֶֽךָ׃
Deuteronomy 1:27דברים א׳:כ״ז
You sulked in your tents and said, “It is out of hatred for us that יהוה brought us out of the land of Egypt, to hand us over to the Amorites to wipe us out.
וַתֵּרָגְנ֤וּ בְאׇהֳלֵיכֶם֙ וַתֹּ֣אמְר֔וּ בְּשִׂנְאַ֤ת יהוה אֹתָ֔נוּ הוֹצִיאָ֖נוּ מֵאֶ֣רֶץ מִצְרָ֑יִם לָתֵ֥ת אֹתָ֛נוּ בְּיַ֥ד הָאֱמֹרִ֖י לְהַשְׁמִידֵֽנוּ׃
Berakhot 54a:6ברכות נ״ד א:ו׳
The mishna articulates a general principle: One is obligated to recite a blessing for the bad that befalls him just as he recites a blessing for the good that befalls him, as it is stated: “And you shall love the Lord your God with all your heart, with all your soul, and with all your might” (Deuteronomy 6:5). The mishna explains this verse as follows: “With all your heart” means with your two inclinations, with your good inclination and your evil inclination, both of which must be subjugated to the love of God. “With all your soul” means even if God takes your soul. “And with all your might” means with all your money, as money is referred to in the Bible as might. Alternatively, it may be explained that “with all your might” means with every measure that He metes out to you; whether it is good or troublesome, thank Him.
חַיָּיב אָדָם לְבָרֵךְ עַל הָרָעָה כְּשֵׁם שֶׁמְּבָרֵךְ עַל הַטּוֹבָה, שֶׁנֶּאֱמַר: ״וְאָהַבְתָּ אֵת יהוה אֱלֹהֶיךָ בְּכׇל לְבָבְךָ וְגוֹ׳״. ״בְּכָל לְבָבְךָ״ — בִּשְׁנֵי יְצָרֶיךָ, בְּיֵצֶר טוֹב וּבְיֵצֶר הָרָע. ״וּבְכׇל נַפְשְׁךָ״ — אֲפִילּוּ הוּא נוֹטֵל אֶת נַפְשְׁךָ. ״וּבְכׇל מְאֹדֶךָ״ — בְּכָל מָמוֹנְךָ. דָּבָר אַחֵר: ״בְּכָל מְאֹדֶךָ״ — בְּכָל מִדָּה וּמִדָּה שֶׁהוּא מוֹדֵד לְךָ הֱוֵי מוֹדֶה לוֹ.
Berakhot 61b:5ברכות ס״א ב:ה׳
We learned in our mishna the explanation of the verse: “And you shall love the Lord your God with all your heart and all your soul and all your might” (Deuteronomy 6:5). This was elaborated upon when it was taught in a baraita: Rabbi Eliezer says: If it is stated: “With all your soul,” why does it state: “With all your might”? Conversely, if it stated: “With all your might,” why does it state: “With all your soul”? Rather, this means that if one’s body is dearer to him than his property, therefore it is stated: “With all your soul”; one must give his soul in sanctification of God. And if one’s money is dearer to him than his body, therefore it is stated: “With all your might”; with all your assets. Rabbi Akiva says: “With all your soul” means: Even if God takes your soul.
״וְאָהַבְתָּ אֵת יהוה אֱלֹהֶיךָ״. תַּנְיָא, רַבִּי אֱלִיעֶזֶר אוֹמֵר: אִם נֶאֱמַר ״בְּכָל נַפְשְׁךָ״, לָמָּה נֶאֱמַר ״בְּכָל מְאֹדֶךָ״?, וְאִם נֶאֱמַר ״בְּכָל מְאֹדֶךָ״, לָמָּה נֶאֱמַר ״בְּכָל נַפְשְׁךָ״? אֶלָּא אִם יֵשׁ לְךָ אָדָם שֶׁגּוּפוֹ חָבִיב עָלָיו מִמָּמוֹנוֹ — לְכָךְ נֶאֱמַר ״בְּכָל נַפְשְׁךָ״. וְאִם יֵשׁ לָךְ אָדָם שֶׁמָּמוֹנוֹ חָבִיב עָלָיו מִגּוּפוֹ — לְכָךְ נֶאֱמַר ״בְּכָל מְאֹדֶךָ״. רַבִּי עֲקִיבָא אוֹמֵר: ״בְּכָל נַפְשְׁךָ״ אֲפִילּוּ נוֹטֵל אֶת נַפְשְׁךָ.
Mesillat Yesharim 19:94מסילת ישרים י״ט:צ״ד
Let us now explain the branches of love. They are the three I mentioned earlier: clinging, joy, and jealousy.
וּנְבָאֵר עַתָּה עַנְפֵי הָאַהֲבָה, הֵם הַשְּׁלֹשָׁה שֶׁזָּכַרְתִּי: הַדְּבֵקוּת, הַשִּׂמְחָה, וְהַקִּנְאָה.