Luke 1:7-11

But they had no child, because Elizabeth was barren, and they were both advanced in years. Now it happened that while he was performing his priestly service before God in the appointed order of his division, according to the custom of the priestly office, he was chosen by lot to enter the temple of the Lord and burn incense. And the whole multitude of the people were in prayer outside at the hour of the incense offering. And an angel of the Lord appeared to him, standing to the right of the altar of incense.