For 400 years, God didn't speak to Israel.  Then he sent an angel to tell an old priest that he would have a son who would prepare the way for God's Son.  This would be John the Baptist.  We can learn some lessons from Zacharias' actions and reactions to the unexpected.

A Faithful Priest (vv. 5-10)

Lesson #1 - God does His best work through ordinary people.

A Fearful Priest (vv.11-17)

Lesson #2 - When God interrupts our plans, it is always for His glory and our good.

A Faithful Priest (vv. 18-25)

Lesson #3 - God's delays are not necessarily His denials.