Ok great. God writes the Gospel of Luke through Luke. Luke--I think you'll probably also agree--even though he wasn't an Apostle, was a member of the Church. Probably, you might even say, a definitely "saved" member of the Church. As were Paul, Matthew, Mark, John, James, Peter, etc.
That's why we say the whole New Testament came to us through the church. Now if there's a hole in that reasoning somewhere, I wouldn't mind hearing it.
The original statement was about the Bible and it's Author, you changed the context of the original argment.