Midrash su Isaia 43:21

A Tale of Rabbi Kahana: Rabbi Kahana and his wife were blessed by God with a (only) son, whom they named Saliq. And when the boy was just five years old, Rabbi Kahana seized him with his hand and wished to take him from their home to the House of Study to learn Torah. The boy's mother spoke up and said to [Rabbi Kahana] "where are you taking my boy?" [Rabbi Kahana] replied "we must entrust him to someone who is able to teach him Torah." She responded to him "it would be far better for both of us to die than for for us to witness our son's departure. He must not leave us, neither to study Torah nor to pursue a trade." Her husband replied "quickly, fetch your marriage contract and I will read it and pay what is stipulated in it per the conditions of a divorce settlement." She said to him "what blemish do you see in me that you wish to divorce me. For is it not written: "If a man marries a woman and it happens that she does not find favor in his eyes for he has found something indecent about her, and he will write for her a certificate of divorce..." (Deuteronomy 24:1). Her husband replied and said "there is no greater blemish than your action, for you preventing my son from drinking the Living Waters (i.e., the words of Torah). And "water" is none but Torah. As it is written "all those who are thirsty, come to the waters" (Isaiah 55:1). And it is written "For they are life to those who find them" (Proverbs 4:22). The wife then said "let us make a compromise between you and I." Says he, "how so?" She replied "go to the marketplace and find us an expert rabbi, and offer an agreement for him to teach our son at home for many days and years, and I will attend to him honorably, and [prepare his meals and launder his clothes]." Immediately, the husband ran to the marketplace and found a wise man sitting and tying his tzitzit (tassels) in seven loops. [Rabbi Kahana] said to the [Wise Man] "peace be upon you, Rabbi." The [Wise Man] replied "peace be upon you, my lord." [Rabbi Kahana] asked "what is your name?" The [Wise Man] replied "my name is Eliezer the Small One." [Rabbi Kahana] then asked "do you have a wife and children?" The [Wise Man] replied "indeed, and they are here with me. My wife is the Torah." As it is written "enjoy happiness with a woman you love all the fleeting days of life that have been granted to you under the sun—all your fleeting days. For that alone is what you can get out of life and out of the means you acquire under the sun" (Ecclesiastes 9:9). The Wise Man continued "And the children of my master are my students, they are now men of Torah." And indeed, each person is obligated to teach their child Torah once they reach the age of six or seven. As it is written "This people I formed for Myself so that they will declare My praise." (Isaiah 43:21). [The Hebrew word "this" (זו) contains the numbers six (ו) and seven (ז)]. Immediately, the woman said to the Wise Man "you will teach my son at our home and my son Saliq will not leave the entrance of my home." The Wise Man replied "I accept your proposal." Immediately, Rabbi Kahana wrote an employer's contract for Rabbi Eliezer. And similarly, Rabbi Eliezer wrote an employee's contract for Rabbi Kahana and taught [Rabbi Kahana's] son Saliq. And so it happened that from the day of his birth from his mother's womb, Saliq never once crossed the doorway of his home. Instead, he remained and studied for twenty-five years, until he reached the age of thirty. And Rabbi Kahana paid Rabbi Eliezer the Small one thousand measurements of gold.

(Exodus 15:13) "You have led forth in lovingkindness (chesed)": You have done chesed with us, for we were without (redeeming) deeds, viz. (Isaiah 63:7) "The lovingkindnesses of the L rd will I proclaim, etc.", (Psalms 89:2) "The lovingkindnesses of the L rd will I ever sing, etc." And the world in its very beginning was built only with chesed, viz. (Ibid. 3) "I said that the world (with) chesed will be built." (Exodus, Ibid.) "this people whom You have redeemed": For all the world is Yours, and You have no people but Israel, viz. (Isaiah 43:21) "This people have I created for Myself, etc." And thus is it written (Song of Songs 6:8) "Sixty are the queens and eighty, are the concubines": "Sixty are the queens" — These are the sixty ten thousands (of Israel, who left Egypt); "and eighty, the concubines" — those below the age of twenty; "and young maidens without number" — the minors, who are numberless. Notwithstanding this, (only) "one is My dove" — Moses, who countervails them all. Once, Rebbi was sitting and expounding that one woman bore sixty ten thousands, when a disciple interjected: Rebbi, who is greater, the world or the tzaddik? Rebbi replied: The tzaddik. How so? When Yocheved bore Moses, he countervailed the entire world. And where do we find that Moses countervailed the entire world? In (Numbers 26:4) "as the L rd commended Moses and the children of Israel", and "Then sang Moses and the children of Israel", and (Devarim 34:10) "And there arose no prophet again in Israel like Moses." (Exodus, Ibid.) "You have guided (them) in Your strength": in the merit of the Torah which they are destined to receive, "strength" being Torah, viz. (Psalms 29:4) "The L rd will give strength to His people; the L rd will bless His people with peace" and (Ibid. 99:4) "… and the strength of the King (i.e., Torah) who loves justice."

(Ibid. 26) "There is none like the Almighty, Yeshurun": Israel says "There is none like G-d," and the Holy Spirit responds "like the G-d of Yeshurun" (Israel). Israel says (Shemoth 15:11) "Who is like You among the mighty, O L-rd," and the Holy Spirit responds (Devarim 33:29) "Happy are you, O Israel. Who is like you?" Israel says (Ibid. 6:4) "Hear, O Israel, the L-rd our G-d, the L-rd is one," and the Holy Spirit responds (I Chronicles 17:21) "Who is like Your people Israel?" Israel says (Song of Songs 2:3) "As an apple among the trees of the forest, (so is my Beloved"), and the Holy Spirit responds (Ibid. 2) "As a rose among the thorns, (so is My loved one"). Israel says (Shemoth 15:2) "This is my G-d and I will extol Him," and the Holy Spirit responds (Isaiah 43:21) "This people did I fashion for Myself." Israel says (Psalms 89:18) "For You are the splendor of their strength," and the Holy Spirit responds (Isaiah 49:3) "Israel, in whom I glory."