(9) and said, “If I have gained Your favor, O Lord, pray, let the Lord go in our midst, even though this is a stiff-necked people. Pardon our iniquity and our sin, and take us for Your own!”
(א) אַחַ֣ר ׀ הַדְּבָרִ֣ים הָאֵ֗לֶּה הָיָ֤ה דְבַר־יְהוָה֙ אֶל־אַבְרָ֔ם בַּֽמַּחֲזֶ֖ה לֵאמֹ֑ר אַל־תִּירָ֣א אַבְרָ֗ם ... וַיּוֹצֵ֨א אֹת֜וֹ הַח֗וּצָה וַיֹּ֙אמֶר֙ הַבֶּט־נָ֣א הַשָּׁמַ֗יְמָה וּסְפֹר֙ הַכּ֣וֹכָבִ֔ים אִם־תּוּכַ֖ל לִסְפֹּ֣ר אֹתָ֑ם וַיֹּ֣אמֶר ל֔וֹ כֹּ֥ה יִהְיֶ֖ה זַרְעֶֽךָ׃ ... וַיֹּאמַ֑ר אֲדֹנָ֣י יֱהוִ֔ה בַּמָּ֥ה אֵדַ֖ע כִּ֥י אִֽירָשֶֽׁנָּה׃ ...
(1) Some time later, the word of the LORD came to Abram in a vision... He took him outside and said, “Look toward heaven and count the stars, if you are able to count them.” And He added, “So shall your offspring be.” ... And he said, “O Lord GOD, how shall I know that I am to possess it?”
(כג) שָׁלֹ֥שׁ פְּעָמִ֖ים בַּשָּׁנָ֑ה יֵרָאֶה֙ כָּל־זְכ֣וּרְךָ֔ אֶת־פְּנֵ֛י הָֽאָדֹ֥ן ׀ יְהוָ֖ה אֱלֹהֵ֥י יִשְׂרָאֵֽל׃ (כד) כִּֽי־אוֹרִ֤ישׁ גּוֹיִם֙ מִפָּנֶ֔יךָ וְהִרְחַבְתִּ֖י אֶת־גְּבוּלֶ֑ךָ וְלֹא־יַחְמֹ֥ד אִישׁ֙ אֶֽת־אַרְצְךָ֔ בַּעֲלֹֽתְךָ֗ לֵרָאוֹת֙ אֶת־פְּנֵי֙ יְהוָ֣ה אֱלֹהֶ֔יךָ שָׁלֹ֥שׁ פְּעָמִ֖ים בַּשָּׁנָֽה׃
(23) Three times a year all your males shall appear before the Sovereign LORD, the God of Israel. (24) I will drive out nations from your path and enlarge your territory; no one will covet your land when you go up to appear before the LORD your God three times a year.
The Sages taught: There was an incident involving one gentile who came before Shammai. The gentile said to Shammai: How many Torahs do you have? He said to him: Two, the Written Torah and the Oral Torah. The gentile said to him: With regard to the Written Torah, I believe you, but with regard to the Oral Torah, I do not believe you. Convert me on condition that you will teach me only the Written Torah. Shammai scolded him and cast him out with reprimand. The same gentile came before Hillel, who converted him and began teaching him Torah. On the first day, he showed him the letters of the alphabet and said to him: Alef, bet, gimmel, dalet. The next day he reversed the order of the letters and told him that an alef is a tav and so on. The convert said to him: But yesterday you did not tell me that. Hillel said to him: You see that it is impossible to learn what is written without relying on an oral tradition. Didn’t you rely on me? Therefore, you should also rely on me with regard to the matter of the Oral Torah, and accept the interpretations that it contains.
(יד) רַבִּי אֶלְעָזָר אוֹמֵר, הֱוֵי שָׁקוּד לִלְמֹד תּוֹרָה, וְדַע מַה שֶּׁתָּשִׁיב לְאֶפִּיקוֹרוֹס. וְדַע לִפְנֵי מִי אַתָּה עָמֵל. וְנֶאֱמָן הוּא בַעַל מְלַאכְתְּךָ שֶׁיְּשַׁלֶּם לָךְ שְׂכַר פְּעֻלָּתֶךְ:
(14) Rabbi Elazar said:Be diligent in the study the Torah; And know how to answer an heretic, And know before whom you toil, and that your employer is faithful, for He will pay you the reward of your labor.
... אמר מה שתשיב לאפיקורוס דעהו אתה בידיעה שלימה ולא יהיה תשובתך אליו מקובלת אצלך או מלומדת מאחר כי כן לא תנצח אותו. ע"כ....
... “know well what you will answer an heretic”, you should know it well; your answer shouldn’t be something you’ve simply heard or learned from another, because in this way you will not be victorious over him.
א"ל ההוא מינא לרבי אבהו אלהיכם כהן הוא דכתיב (שמות כה, ב)... במאי טביל וכי תימא במיא והכתיב (ישעיהו מ, יב) מי מדד בשעלו מים א"ל בנורא טביל דכתיב (ישעיהו סו, טו) ...
A certain heretic said to Rabbi Abbahu: Your God is a priest... When He buried Moses, in what ritual bath did He immerse? ...
Rabbi Abbahu said to him: He immersed in fire, as it is written: “For, behold, the Lord will come in fire” ...
(יז) וְחָרָ֣ה אַפִּ֣י ב֣וֹ בַיּוֹם־הַ֠הוּא וַעֲזַבְתִּ֞ים וְהִסְתַּרְתִּ֨י פָנַ֤י מֵהֶם֙ ...
(17) Then My anger will flare up against them, and I will abandon them and hide My countenance from them. ...
... לא הניח יתרו עבודה זרה בכל העולם, שלא חזר עליה ועבדה,
...There was no idolatry in the world that Yithro did not come across and did not worship...
(1) "What brightens the eyes". The light of the eyes (clarity) in a doubtful thing gladdens the heart, because in the world there is no joy like the resolution of doubts.