(Genesis 12:5) "And Abram took Sarai his wife, etc." If all the nations of the world were to gather together to create even a single gnat and to cast a soul into it, they could not do so. Yet you say, "and the souls that they had made in Haran" (Genesis 12:5)? Rather, these are the converts whom they converted. But let it say "whom they converted"; why does it say "whom they made"? Rather, this is to teach you that whoever draws a gentile near [to the worship of God], Scripture regards it as though he had made him. And let it say "whom he made"; why does it say "whom they made"? Rav Huna said: Abraham would convert the men, and Sarah would convert the women.
The Souls Abraham and Sarah Made in Haran
Yalkut Shimoni on Torah 66:3
(בראשית יב ה) וַיִּקַּח אַבְרָם אֶת שָׂרַי אִשְׁתּוֹ וְגוֹ'. אִם מִתְכַּנְּסִין כָּל אֻמּוֹת הָעוֹלָם לִבְרֹאת אֲפִלּוּ יַתּוּשׁ אֶחָד וּלְהָטִיל בּוֹ נְשָׁמָה, אֵינָן יְכוֹלִין, וְאַתְּ אָמְרַת: וְאֶת הַנֶּפֶשׁ אֲשֶׁר עָשׂוּ בְחָרָן. אֶלָּא אֵלּוּ הַגֵּרִים שֶׁגִּיְּרוּ. וְנֵימָא 'שֶׁגִּיְּרוּ', לָמָה אָמַר 'שֶׁעָשׂוּ', אֶלָּא לְלַמֶּדְךָ: שֶׁכָּל מִי שֶׁמְּקָרֵב אֶת הַגּוֹי, מַעֲלֶה עָלָיו כְּאִלּוּ עֲשָׂאוֹ. וְלֵימָא 'אֲשֶׁר עָשָׂה', לָמָה אָמַר 'אֲשֶׁר עָשׂוּ', אָמַר רַב הוּנָא: אַבְרָהָם הָיָה מְגַיֵּר אֶת הָאֲנָשִׁים, וְשָׂרָה מְגַיֶּרֶת אֶת הַנָּשִׁים.