* Pesachim 22b, one may not enable a Noachide to sin. If absent the assistance of a Jew no violation could or would take place, it is a biblical violation of "before a blind person thou shall not put a stumbling block" for a Jew to assist a Noachide in violating his law.
* Yoma 28b, the patriarchs observed all the laws of the Torah even though they were Noahides.
* Megillah 13a, explains that Mordechai was called "Ish Yehudi" because anyone who rejects idolatry is called a "Yehudi." The Maharsha explains that within the name Yehudah is the Tetragrammaton. Therefore, righteous Gentiles should also be called with God's name.
* Yevamot 47b, part of the instruction of the candidate for conversion must include "the sin of gleaning, the forgotten sheaf, pe'ah and the indigent's tithe". Why is this asked? because [Noahide law may say that] a noahide is slain for less than a prutah and it may not be returned. Rashi comments: So that [if such a candidate is a landowner] he should not say 'these poor people who are taking the edges of my field are thieves'; he will then attack them and kill them according to their [Noahide] laws.
* Yevamot 48b, Why are proselytes at the present time oppressed and visited with afflictions? Because they had not observed the seven Noahide commandments.
