(I)t seemed good to me also, having had perfect understanding of all things from the very first, to write to you an orderly account, most excellent Theophilus, that you may know the certainty of those things in which you were instructed.
Luke is using the 'all things' phrase to establish his qualifications for what he is going to report. This might be called a restricted 'all things'
Readings:
Morning Psalm 71, Noon Psalm 119:25-32 Evening Psalm 23