"The right stuff" describes the qualities of character, competence, and temperament possessed by the early astronauts. They had "the right stuff" for the job and all of us admired them for this. In terms of American history, they are kin to those sturdy folk who first settled this nation, as well as those who later broke out of the confines of the eastern seaboard and courageously headed into the western wilderness. Some years ago there was a book about these latter heroes titled Men to Match My Mountains, telling the story of those who had the tough, "right stuff" to stretch this country from coast to coast.
Jesus is certainly talking about having "the right stuff" in this passage. He is telling us what it would take then, and what it takes now, to be his follower. There is no soft sentime…