Albert Barnes' Notes on the Whole Bible - Luke 2:37
And she was a widow of about fourscore and four years - That is, she was about 84 years of age. It does not mean that she had been a widow for that long time.Fastings and prayers - Constant religious service. pending her time in prayer, and in all the ordinances of religion.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... read more
The Pulpit Commentary - Luke 2:37
Which departed not from the temple, but served God with fastings and prayers night and day . Probably, in virtue of her reputation as a prophetess, some small chamber in the temple was assigned to her. This seems to have been the case with Huldah ( 2 Chronicles 34:22 ). It has also been suggested that she lovingly performed some work in or about the sacred building. Farrar suggests such as trimming the lamps (as is the rabbinic notion about Deborah), derived from the word lapidoth ,... read more