Luke 1:6 Meaning

4That thou mightest know the certainty of those things, wherein thou hast been instructed.

5There was in the days of Herod, the king of Judaea, a certain priest named Zacharias, of the course of Abia: and his wife was of the daughters of Aaron, and her name was Elisabeth.

6And they were both righteous before God, walking in all the commandments and ordinances of the Lord blameless.

7And they had no child, because that Elisabeth was barren, and they both were now well stricken in years.

8And it came to pass, that while he executed the priest's office before God in the order of his course,