181. Come and behold, When it was in this world, it was called Lot. In the World to Come, it will be partly canceled and called Laban, it not as corrupt as before, but as one who washed the filth off of himself. HE ASKS, Why is there need of Laban? (MEANING, WHY IS IT NEEDED TO REMAIN IN THE WORLD?) Rabbi Shimon said, It is needed for being fruitful and multiply. If there is no Evil Inclination, nothing is fruitful or multiplies.
181. תָּא חֲזֵי בַּתְּחִלָּה כְּשֶׁהָיָה מוּטָּל בּעה"ז נִקְרָא לוֹט, לָעה"ב יִבָּטֵל מִן הָעוֹלָם, אֲבָל לֹא כּוּלּוֹ וְנִקְרָא לָבָן, לֹא מְנוּוָל כְּבָרִאשׁוֹנָה, אֶלָּא כְּמַאן דְּסָחֵי מִנִּוּוּלוֹ. לָבָן לְמַאי אִצְטְרִיךְ. אָמַר רָבִּי שִׁמְעוֹן, לְמֶעְבַּד פְּרִיָּה וּרְבִיָּה אִצְטְרִיךְ, דְּאָמַר רָבִּי שִׁמְעוֹן, אִם אֵין יֵצֶר הָרָע נִמְצָא, פְּרִיָּה וּרְבִיָּה אֵינוֹ מָצוּי.