In the post-Shavuot spirit, in contrast to Ruth who was so singleminded in her famous testimony of devotion, Moses’ father-in-law Jethro stands as a contrasting Biblical convert.
From the outset, Jethro is complex and possibly even ambivalent. It is not immediately clear exactly what his role vis a vis the Jewish people is.
In fact, it is not exactly clear who he even is. The famous Rashi quotes Jethro as having seven names, again suggesting complexity and possibly ambiguity in his very identity.