that you may know the certainty of those things in which you were instructed.
Luke 1:4
Surrounding context
1:3 it 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,
1:4 that you may know the certainty of those things in which you were instructed.
1:5 There was in the days of Herod, the king of Judea, a certain priest named Zacharias, of the division of Abijah. His wife was of the daughters of Aaron, and her name was Elizabeth.