“One of the major themes throughout Luke-Acts is the universalization of the gospel — that it is for all people from the last, least and lost to the first, most and found. This is a theme Luke found in his favorite prophetic book, Isaiah, and it is highlighted both early and often in Luke-Acts (cf., e.g., Luke 3:6 “all flesh shall see the salvation of God,” to Isa. 52:10). The story of the Ethiopian eunuch may be said to be exhibit A of this promise being fulfilled, not least because the actual text of Isa. 52:10 says all the ends of the earth shall see God’s salvation, and that is precisely where the Ethiopian comes from as things were viewed in Luke’s day.” – Ben Witherington III