Is Luke’s Christology Consistent?

Does Luke present a (strictly speaking) consistent view of Jesus throughout his two-volume work of Luke-Acts?

I raise the question because of the textual problem surrounding the voice at Jesus’ baptism. I have been arguing that it is likely that the voice did NOT say “You are my beloved Son in whom I am well pleased” (as in most manuscripts; this is what it clearly does say in Mark’s version; Matthew has it say something different still); instead it probably said “You are my Son, today I have...