(יח) וְעָשִׂ֛יתָ הַיָּשָׁ֥ר וְהַטּ֖וֹב בְּעֵינֵ֣י יְהֹוָ֑ה לְמַ֙עַן֙ יִ֣יטַב לָ֔ךְ וּבָ֗אתָ וְיָֽרַשְׁתָּ֙ אֶת־הָאָ֣רֶץ הַטֹּבָ֔ה אֲשֶׁר־נִשְׁבַּ֥ע יְהֹוָ֖ה לַאֲבֹתֶֽיךָ׃
(18) Do what is right and good in the sight of the LORD, that it may go well with you and that you may be able to possess the good land that the LORD your God promised on oath to your fathers,
(כח) שְׁמֹ֣ר וְשָׁמַעְתָּ֗ אֵ֚ת כׇּל־הַדְּבָרִ֣ים הָאֵ֔לֶּה אֲשֶׁ֥ר אָנֹכִ֖י מְצַוֶּ֑ךָּ לְמַ֩עַן֩ יִיטַ֨ב לְךָ֜ וּלְבָנֶ֤יךָ אַחֲרֶ֙יךָ֙ עַד־עוֹלָ֔ם כִּ֤י תַעֲשֶׂה֙ הַטּ֣וֹב וְהַיָּשָׁ֔ר בְּעֵינֵ֖י יְהֹוָ֥ה אֱלֹהֶֽיךָ׃ {ס}
(28) Be careful to heed all these commandments that I enjoin upon you; thus it will go well with you and with your descendants after you forever, for you will be doing what is good and right in the sight of the LORD your God.
But there is so much halacha (law) in Judaism. What is this “tov” “v’yashar” that the Torah refers to?
(א) שמר. זוֹ מִשְׁנָה שֶׁאַתָּה צָרִיךְ לְשָׁמְרָהּ בְּבִטְנְךָ שֶׁלֹּא תִשְׁכַּח, כָּעִנְיָן שֶׁנֶּאֱמַר (משלי כ"ב) "כִּי נָעִים כִּי תִשְׁמְרֵם בְּבִטְנֶךָ", וְאִם שָׁנִיתָ אֶפְשָׁר שֶׁתִּשְׁמַע וּתְקַיֵּם, הָא כָל שֶׁאֵינוֹ בִּכְלַל מִשְׁנָה אֵינוֹ בִּכְלַל מַעֲשֶׂה (עי' ספרי): (ב) את כל הדברים. שֶׁתְּהֵא חֲבִיבָה עָלֶיךָ מִצְוָה קַלָּה כְּמִצְוָה חֲמוּרָה (שם): (ג) הטוב. בְּעֵינֵי הַשָּׁמַיִם: (ד) והישר. בְּעֵינֵי אָדָם:
(1) שמר KEEP [AND HEAR (understand) ALL THESE WORDS WHICH I COMMAND THEE] — This (the word שמר) implies the studying of the oral law — that you must keep it within you that it should not be forgotten, just as it is said, (Proverbs 22:18) “[And apply thy heart unto my knowledge] for it is a pleasant thing if thou keep (תשמרם) them within thee”, and only if thou learnest is it possible that thou wilt understand and fulfil the commands, but one who is not amongst those who study (lit., who is not included in learning) cannot be amongst those who act correctly (cf. Sifrei Devarim 79:3; see also Rashi on Deuteronomy 4:6). (The translation is: keep, i.e. study and retain your learning in mind: ושמעת, and then thou wilt understand how to observe the commands). (2) את כל הדברים [KEEP …] ALL WORDS [WHICH I COMMAND THEE] — This implies that a light precept should be as dear to you as a grave precept (Sifrei Devarim 79:4). (3) הטוב [THAT IT MAY GO WELL WITH THEE … WHEN THOU DOEST] WHAT IS GOOD — This refers to an action that is proper in the eyes of the Heavenly Father. (4) והישר AND WHAT IS RIGHT — this refers to an action that appears to be proper in the eyes of men (Sifrei Devarim 79:5).
(א) ועשית הישר והטוב בעיני ה' על דרך הפשט יאמר תשמרו מצות השם ועדותיו וחקותיו ותכוין בעשייתן לעשות הטוב והישר בעיניו בלבד ו למען ייטב לך הבטחה יאמר כי בעשותך הטוב בעיניו ייטב לך כי השם מטיב לטובים ולישרים בלבותם ולרבותינו בזה מדרש יפה אמרו זו פשרה ולפנים משורת הדין והכוונה בזה כי מתחלה אמר שתשמור חקותיו ועדותיו אשר צוך ועתה יאמר גם באשר לא צוך תן דעתך לעשות הטוב והישר בעיניו כי הוא אוהב הטוב והישר וזה ענין גדול לפי שאי אפשר להזכיר בתורה כל הנהגות האדם עם שכניו ורעיו וכל משאו ומתנו ותקוני הישוב והמדינות כלם אבל אחרי שהזכיר מהם הרבה כגון לא תלך רכיל (ויקרא יט טז) לא תקום ולא תטור (שם פסוק יח) ולא תעמוד על דם רעך (שם פסוק טז) לא תקלל חרש (שם פסוק יד) מפני שיבה תקום (שם פסוק לב) וכיוצא בהן חזר לומר בדרך כלל שיעשה הטוב והישר בכל דבר עד שיכנס בזה הפשרה ולפנים משורת הדין וכגון מה שהזכירו בדינא דבר מצרא (ב"מ קח) ואפילו מה שאמרו (יומא פו) פרקו נאה ודבורו בנחת עם הבריות עד שיקרא בכל ענין תם וישר:
(1) AND THOU SHALT DO THAT WHICH IS RIGHT AND GOOD IN THE SIGHT OF THE ETERNAL. In line with the plain meaning of Scripture the verse says, “Keep the commandments of G-d, His testimonies, and His statutes, and, in observing them, intend to do what is right and good in His sight only.” And [the expression in the verse before us] that it may be well with thee is a promise, stating that, when you will do that which is good in His eyes, it will be well with you, for G-d does good unto the good, and to them that are upright in their hearts. Our Rabbis have a beautiful Midrash on this verse. They have said: “[That which is right and good] refers to a compromise and going beyond the requirement of the letter of the law.” The intent of this is as follows: At first he [Moses] stated that you are to keep His statutes and His testimonies which He commanded you, and now he is stating that even where He has not commanded you, give thought, as well, to do what is good and right in His eyes, for He loves the good and the right. Now this is a great principle, for it is impossible to mention in the Torah all aspects of man’s conduct with his neighbors and friends, and all his various transactions, and the ordinances of all societies and countries. But since He mentioned many of them — such as, Thou shalt not go up and down as a talebearer; Thou shalt not take vengeance, nor bear any grudge; neither shalt thou stand idly by the blood of thy neighbor; Thou shalt not curse the deaf; Thou shalt rise up before the hoary head and the like — he reverted to state in a general way that, in all matters, one should do what is good and right, including even compromise and, going beyond the requirements of the law. Other examples are the Rabbis’ ordinances concerning the prerogative of a neighbor, and even what they said [concerning the desirability] that one’s youthful reputation be unblemished, and that one’s conversation with people be pleasant. Thus [a person must seek to refine his behavior] in every form of activity, until he is worthy of being called “good and upright.”