His wife was the Righteous Elizabeth, it was thought that she was unable to bear children.
One day when Zachariah was in the temple an angel of the Lord appeared before him
and told him that his aged wife would bear a son who "will be great in the sight of the
Lord (Luke 1 : 15) and will go before him in the spirit and power of Elias" (Luke 1:17).
The prophet doubted that this prediction would come true and for his weakness of faith
he was punished by becoming mute.