Adam Clarke, on Luke 1:21

“And the people were waiting for Zachary; and they wondered that he tarried so long in the temple.”

“The people waited - The time spent in burning the incense was probably about half an hour, during which there was a profound silence, as the people stood without engaged in mental prayer. To this there is an allusion in Rev 8:1-5. Zacharias had spent not only the time necessary for burning the incense, but also that which the discourse between him and the angel took up.”

Imported from an open dataset — not yet checked against the printed edition.