διακονηθῆναι [12 verses](verb aor inf pass) "Tobe unto" is from  diakoneo, which "to act as a servant," "to serve," and "to perform services." It is from the same root as a word that means "servant" and is the source of our word "deacon." This is not the word usually translated as "servant" that actually means slave. -- The Greek verb translated as "serve" means "to act as a servant," "to minister," and "to perform services." It is usually translated as "minister" in the Bible. THe noun from the same root is usually translated as "minister" and is the source of our word "deacon."