Luke 1:4 in the King James Version
That thou mightest know the certainty of those things, wherein thou hast been instructed.
Context
3 it seemed good to me also, having traced the course of all things accurately from the first, to write to you in order, most excellent Theophilus;
4 that you might know the certainty concerning the things in which you were instructed.
5 There was in the days of Herod, the king of Judea, a certain priest named Zacharias, of the priestly division of Abijah. He had a wife of the daughters of Aaron, and her name was Elizabeth.