Luke 1:8 WEB

⁶  They were both righteous before God, walking blamelessly in all the commandments and ordinances of the Lord.

⁷  But they had no child, because Elizabeth was barren, and they both were well advanced in years.

⁸  Now it happened, while he executed the priest's office before God in the order of his division,

⁹  according to the custom of the priest's office, his lot was to enter into the temple of the Lord and burn incense.

¹⁰  The whole multitude of the people were praying outside at the hour of incense.