36. Rabbi Shimon replied that Terach did not leave Ur of the Chaldeans because he wanted to repent and mend his ways, but only to save himself from all the people of his land, who wanted to kill him. Particularly after they saw that Abraham was saved FROM THE FURNACE OF FIRE, they said to Terach, 'You were the one who misled us with these idols,' AND WANTED TO KILL HIM. Because he feared them, Terach left. THEREFORE, when he reached Charan, he stayed, as it is written, "So Abraham departed, as Hashem had spoken to him, and Lot went with him" (Beresheet 12:4). Terach is not mentioned in the verse!
36. אָמַר לוֹ רָבִּי שִׁמְעוֹן, אִי תֵימָא, דְּתֶרַח כַּד נְפַק, מֵאוּר כַּשְׂדִּים, בְּגִין לְאַהֲדָרָא בִּתְשׁוּבָה הֲוָה, לָאו הָכֵי, אֶלָּא כַּד נְפַק, לְאִשְׁתְּזָבָא נְפַק, דַּהֲווֹ כָּלְהוֹ בְּנֵי אַרְעֵיהּ, בָּעָאן לְמִקְטְלֵיהּ. כֵּיוָן דְּחָזוֹ, דְּאִשְׁתְּזֵיב אַבְרָהָם, הֲווֹ אָמְרֵי לֵיהּ לְתֶרַח, אַנְתְּ הוּא דַּהֲוֵית מַטְעֵי לָן, בְּאִלֵּין פְּסִילִין, וּמִגּוֹ דַּחֲלָא דִּלְהוֹן, נְפַק תֶּרַח, כֵּיוָן דְּמָטָא לְחָרָן, לָא נְפַק מִתַּמָּן לְבָתַר, דִּכְתִיב וַיֵּלֶךְ אַבְרָם כַּאֲשֶׁר דִּבֶּר אֵלָיו ה' וַיֵּלֶךְ אִתּוֹ לוֹט. וְאִילוּ תֶּרַח לָא כְּתִיב.