"And Yitro, the priest of Midian, the father-in-law of Moshe, heard all that G-d did for Moshe and to Israel his people, that G-d had taken the Israel out of Egypt" (Shemot 18:1). Of course, Yitro was not the only one who heard all that G-d had done. Yet he was the only one who was listening; the only one who cared enough and was moved enough to actually do something. While others likely were impressed to hear that a slave nation took on the worlds superpower, such lasted the 30 seconds or so they spoke about it. They then moved on with their daily activities.