What Kavod did Moshe do Yisro by going out to greet him?
Rashi: One can assume that when Moshe left the camp, Aharon, Nadav and Avihu accompanied him, and who would see these great people leaving the camp and not follow suit?
Moshav Zekenim: This is the source that one should greet everyone first (before he greets you), even a non-Jew in the market.
What is the source that this is due to the kindness that he did with him? Perhaps he showed Yisro respect because he was his father-in-law! (EC) If he holds that he divorced her (like Moshav Zekenimm verse 2), this is not difficult. (PF)
Unlike the chief butler, who forgot Yosef in spite of the kindness that Yosef had performed with him (Seforno).
Rashi writes that Moshe was the Ish who bowed, for it says "veha'Ish Moshe." Also Yisro is called Ish
Moshav Zekenim #1, Da'as Zekenim #1, Hadar Zekenim #1: We learn "Ish" from "Ish ha'Elokim", and not from "veha'Ish." 1
Moshav Zekenim #2: It showed humility to bow, so we learn from "veha'Ish Moshe Anav
How could Yisro come to Yisrael? Anenei ha'Kavod surrounded them!
Moshav Zekenim: Midrash (Agadah) says that he shot an arrow with a message saying that he is coming. 1
Moshav Zekenim: How did the arrow get through? The cloud protected against arrows and catapult rocks! Some say that Machaneh Dan was outside the cloud, due to Pesel Michah. Alternatively, due to Moshe's honor, the arrow went through the cloud.