Luke 1:10

But they had no child, because Elizabeth was barren, and they both were well advanced in years.

Now while he executed the priest’s office before God in the order of his division

according to the custom of the priest’s office, his lot was to enter into the temple of the Lord and burn incense.

An angel of the Lord appeared to him, standing on the right side of the altar of incense.

Zacharias was troubled when he saw him, and fear fell upon him.

But the angel said to him, “Don’t be afraid, Zacharias, because your request has been heard. Your wife, Elizabeth, will bear you a son, and you shall call his name John.