Zevachim 116 - How to Bring Sacrifices on a Private Altar
When private altars were allowed, one could bring any clean (kosher) animal: domesticated, wild, or a bird, provided that it was not missing a complete limb. This was still permitted to non-Jews after the Temple was built and the Jews had to bring their sacrifices there.
Could the sacrifices brought on private altar be eaten as peace-offerings, or did they have to be burned, as burnt-offerings? Those who say that they could be eaten point out that " Abel brought from the firstlings of his flock and from their fats ..." - that is, he brought the fats but ate the rest. And those who say that Abel brought only burnt-offerings explain that he brought the fattest of the lambs and burned them completely.
But didn't Jethro bring peace-offerings ? - Jethro came after the giving of the Torah, when eating sacrifices became allowed.
What did Jethro hear that he came ? He heard about the splitting of the Red Sea. But why did Rahav say about it " No spirit remained erect in any man " (hint)? - She knew, because there was no leader or ruler who did not come to her. She started at 10, was a prostitute for 40 years, and converted at 50.
Art: Lovis (Franz Heinrich Louis) Corinth - The Painter Charlotte Berend With A Bull 1902