According to Midrash Sifri (Deuteronomy 343), Hashem first went around to all the nations and offered them the Torah before offering it to Bnei Yisroel. So why do we say in Kiddush and Birchas ...
Did Jethro convert? And, was it before or after the Torah was given? I heard a few things this past shabbat, but I would like to see if we can compile all of the midrashic and aggadic opinions.