Luke 1:8 MSG

[8] It so happened that as Zachariah was carrying out his priestly duties before God, working the shift assigned to his regiment, it came his one turn in life to enter the sanctuary of God and burn incense. The congregation was gathered and praying outside the Temple at the hour of the incense offering. Unannounced, an angel of God appeared just to the right of the altar of incense. Zachariah was paralyzed in fear.