Luke 1:72

To perform the mercy promised to our fathers, and to remember his holy covenant;

More from Luke 1

Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us,

Verse 2

Even as they delivered them unto us, which from the beginning were eyewitnesses, and ministers of the word;

Verse 3

It seemed good to me also, having had perfect understanding of all things from the very first, to write unto thee in order, most excellent Theophilus,

Verse 4

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

Verse 5

There 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.