Q: In Luke 17:37 when one is left and the other taken, the disciples want to know where the one will be taken. Jesus doesn't seem to really answer this question. Please explain.
A: The question in Luke 17:37 is actually not asking where they are taken, but rather where the second coming of the Messiah will take place. The question is similar to one in Matthew 24. Jesus does not name the place of the second coming, but merely gives a clue: wherever the body is, there will the vultures be gathered together. The body refers to Israel, and the vultures refers to the Gentile armies. Where the body of Israel is located, there the Gentile armies gather, and where the Gentile armies gather, that is where the second coming of the Messiah will be. Jesus does not actually answer the question because he presupposes Old Testament knowledge based upon passages such as Isaiah 34:1-7 and Isaiah 63:1-6, as well as Micah 2:12-13. The basic answer is the city of Bozrah, better known today by its Greek name of Petra.
A detailed study of Petra, as well as the rest of Jordan and Israel, can be found in our book A Study Guide of Israel: Historical and Geographical.