My answer will also answer Shelby's point from above.
Inspired by God doesn't mean the same then as we want it or take it to me NOW, we keep forgetting that.
Luke was inspired By God to write, inspired by his love for God and Jesus and that love inspired him to write what he knew about Jesus's work, not only based on what he was told and saw, but by organizing the works he had access to.
Inspired by God didn't mean "God speaking via the HS through Luke", no more than it would mean that about the current apologists that write about Christianity.
I think we are confusing "inspired by God" with "The inspired WORD of God".
Ok. Because of my love for trees, and especially the one in my front yard (who I call Rick), I have written a book called "Book of Front Yard Trees."
Therefore, in a sense, I was inspired by Rick to write "Book of Front Yard Trees."
Also, last week I fell in love with the beautilful young barister (Sally) down at the Starbucks, so I went home and wrote "Ode to my lovely barister."
Therefore, in a sense, I was inspired by Sally to write "Ode to my lovely barister."