Avot5: 1
בַּעֲשָׂרָה מַאֲמָרוֹת נִבְרָא הָעוֹלָם. וּמַה תַּלְמוּד לוֹמַר, וַהֲלֹא בְמַאֲמָר אֶחָד יָכוֹל לְהִבָּרְאוֹת? אֶלָּא לְהִפָּרַע מִן הָרְשָׁעִים שֶׁמְּאַבְּדִין אֶת הָעוֹלָם שֶׁנִּבְרָא בַּעֲשָׂרָה מַאֲמָרוֹת, וְלִתֵּן שָׂכָר טוֹב לַצַּדִּיקִים שֶׁמְּקַיְּמִין אֶת הָעוֹלָם שֶׁנִּבְרָא בַּעֲשָׂרָה מַאֲמָרוֹת.
With ten Divine Statements the world was created. And what does this come to teach? Is it not evident that it could have been created with one Divine Statement? Rather, [it is] to hold liable the wicked who destroy the world that was created with ten Di-vine Statements, and to bestow optimal reward upon the righteous who sustain the world that was created with ten Divine Statements.
Avot5: 2
עֲשָׂרָה דוֹרוֹת מֵאָדָם וְעַד נֹחַ, לְהוֹדִיעַ כַּמָּה אֶרֶךְ אַפַּיִם לְפָנָיו, שֶׁכָּל הַדּוֹרוֹת הָיוּ מַכְעִיסִין וּבָאִין עַד שֶׁהֵבִיא עֲלֵיהֶם אֶת מֵי הַמַּבּוּל.  עֲשָׂרָה דוֹרוֹת מִנֹּחַ וְעַד אַבְרָהָם, לְהוֹדִיעַ כַּמָּה אֶרֶךְ אַפַּיִם לְפָנָיו, שֶׁכָּל הַדּוֹרוֹת הָיוּ מַכְעִיסִין וּבָאִין, עַד שֶׁבָּא אַבְרָהָם וְקִבֵּל [עָלָיו] שְׂכַר כֻּלָּם.
[There were] ten generations from Adam to Noah. [This is] to show how much patience [exists] before Him, for all those gen-erations angered [God] increasingly, until He brought upon them the waters of the Flood.  [There were] ten generations from Noah to Abraham. [This is] to show how much patience exists before Him, for all those generations were increasingly contemptuous [before God], until Abraham came and took upon himself the reward for them all.
Avot5: 3
עֲשָׂרָה נִסְיוֹנוֹת נִתְנַסָּה אַבְרָהָם אָבִינוּ עָלָיו הַשָּׁלוֹם וְעָמַד בְּכֻלָּם, לְהוֹדִיעַ כַּמָּה חִבָּתוֹ שֶׁל אַבְרָהָם אָבִינוּ עָלָיו הַשָּׁלוֹם.
[In] ten tests our father Abraham, peace be on him, was tested and he stood up to all of them. [This is] to make known how great is the endear- ment of our father Abraham, peace be on him.