'Serving' in the Bible

and then as a widow to the age of eighty-four. She never left the temple, serving night and day with fastings and prayers.

But Martha was distracted with all her preparations; and she came up to Him and said, “Lord, do You not care that my sister has left me to do all the serving alone? Then tell her to help me.”

But he answered and said to his father, ‘Look! For so many years I have been serving you and I have never neglected a command of yours; and yet you have never given me a young goat, so that I might celebrate with my friends;