Luke 1:3-4
Luke 1:3-4 AMP
it seemed fitting for me as well, [and so I have decided] after having carefully searched out and investigated all the events accurately, from the very beginning, to write an orderly account for you, most excellent Theophilus; [Acts 1:1] so that you may know the exact truth about the things you have been taught [that is, the history and doctrine of the faith].