In Matthew chapter 1 there is a genealogy of Jesus that ends with Joseph the carpenter, and in Luke chapter 3 the same, but all other names are different. Would you please explain why there are these two different genealogies?
These two genealogies differ in various respects, and the traditional answer is that Matthew’s genealogy is that of Joseph’s family, while Luke’s is that of Mary’s family. Another possibility would be that we have the paternal and maternal genealogies of either Joseph or Mary. Whatever the case, the focus of the Matthean genealogy is to show that Jesus is a son of David, while the focus of the Lukan genealogy is to show that Jesus is a son of Adam, a son of humanity. The purposes of the two genealogies differ.
—Ben Witherington III