According to these sources, what is the point of (the good that can be found in) relationships?
(ט) טוֹבִ֥ים הַשְּׁנַ֖יִם מִן־הָאֶחָ֑ד אֲשֶׁ֧ר יֵשׁ־לָהֶ֛ם שָׂכָ֥ר ט֖וֹב בַּעֲמָלָֽם׃ (י) כִּ֣י אִם־יִפֹּ֔לוּ הָאֶחָ֖ד יָקִ֣ים אֶת־חֲבֵר֑וֹ וְאִ֣יל֗וֹ הָֽאֶחָד֙ שֶׁיִּפּ֔וֹל וְאֵ֥ין שֵׁנִ֖י לַהֲקִימֽוֹ׃
(9)Two are better off than one, in that they have greater benefit from their earnings. (10) For should they fall, one can raise the other; but woe betide him who is alone and falls with no companion to raise him!
(כ) (הלוך) [הוֹלֵ֣ךְ] אֶת־חֲכָמִ֣ים (וחכם) [יֶחְכָּ֑ם] וְרֹעֶ֖ה כְסִילִ֣ים יֵרֽוֹעַ׃
(20) He who keeps company with the wise becomes wise,
But he who consorts with dullards comes to grief.
But he who consorts with dullards comes to grief.
(כד) אִ֣ישׁ רֵ֭עִים לְהִתְרֹעֵ֑עַ וְיֵ֥שׁ אֹ֝הֵ֗ב דָּבֵ֥ק מֵאָֽח׃
(24) There are companions to keep one company,
And there is a friend more devoted than a brother.
And there is a friend more devoted than a brother.
(יז) בַּרְזֶ֣ל בְּבַרְזֶ֣ל יָ֑חַד וְ֝אִ֗ישׁ יַ֣חַד פְּנֵֽי־רֵעֵֽהוּ׃
(17) As iron sharpens iron, so a man sharpens the wit of his friend.
וקנה לך חבר כיצד מלמד שיקנה האדם חבר לעצמו שיאכל עמו וישתה עמו ויקרא עמו וישנה עמו ויישן עמו ויגלה לו כל סתריו סתר תורה וסתר דרך ארץ שכשיושבין ועוסקין בתורה וטעה א' מהם הלכה או ראש הפרק או שיאמר על טמא טהור או על טהור טמא [ועל אסור מותר ועל מותר אסור חבירו מחזירו. ומניין] שכשחבירו מחזירו וקורא עמו שיש להם שכר טוב בעמלן שנא׳ (קהלת י) טובים השנים מן הא' אשר יש להם שכר טוב בעמלם:
And acquire for yourself a friend. How so? This teaches that a person should acquire a friend for himself who will eat with him, and drink with him, and study Scripture and Mishnah with him, and go to sleep with him, and tell him all his secrets, both secrets of the Torah and secrets of the ways of the world. For when they sit and engage in Torah together, and one of them makes a mistake in the law, or the division of chapters, or declares an impure thing pure, or a pure thing impure, [or a forbidden thing permitted or a permitted thing forbidden, then his friend will correct him. And how do we know] that when his friend corrects him and studies with him, that they will have great reward from their studies? For it says (Ecclesiastes 4:9), “The two are better than the one, for they have great reward from their efforts.”