What does Luke 1:6 mean?
Zechariah and Elizabeth are an older, childless married couple (Luke 1:7). Both are descendants of Aaron, and Zechariah is a priest whose family is part of the "division" of Abijah (Luke 1:5; 1 Chronicles 24:10). Each of the 24 divisions would rotate in priestly duties within the temple during the year. Luke emphasizes these two are God-fearing, righteous people; their lack of children is not a punishment for their sin or mistakes (John 9:1–3).The term "blameless," as used here, does not imply being entirely sinless. It's not a suggestion that Elizabeth and Zechariah are morally perfect—it means there is nothing in their lives which others can criticize. To be "blameless" is very much the same as to lack a "blemish." This is reference to one's reputation and general character. Zechariah and Elizabeth are well-known and well-respected for their obedience to God.
Soon, God will send an angel to Zechariah, delivering news which is both encouraging and difficult to believe (Luke 1:11–13).