Luke 1:2-6

even as they delivered them unto us, who from the beginning were eyewitnesses and ministers of the word, it seemed good to me also, having traced the course of all things accurately from the first, to write unto thee in order, most excellent Theophilus; that thou mightest know the certainty concerning the things wherein thou wast instructed. There was in the days of Herod, king of Judæa, a certain priest named Zacharias, of the course of Abijah: and he had a wife of the daughters of Aaron, and her name was Elisabeth. And they were both righteous before God, walking in all the commandments and ordinances of the Lord blameless.