and she had been a widow for about eighty-four years), who didn't depart from the temple, worshipping with fastings and petitions night and day.
Night and day - Continually - that is, at the usual times of public worship and in private. When it is said that she departed not from the temple, it is meant that she was “constant” and “regular” in all the public services at the temple, or was never absent from those services. God blesses those who wait at his temple gates.