The word diakonos refers to those who execute the commands of another, the master. It often is used of those who wait at table to offer food and drink or to supply other necessities of life. The word oiketes denotes a house-servant with a relationship to the family. These explanations from the study of Bible words suggest that to serve is to care and provide for the welfare of others. That may be physical welfare or spiritual welfare.
Service then is the virtue of doing things to meet the physical or spiritual needs of others.
The idea of service is elevated throughout the Bible. It is magnified most in association with the promises of the Messiah, both in concept and designation. It is also elevated by the declaration and life of the Messiah Himself. By the concept of the Messiah. Israel's Messiah is often presented as the deliverer.