serve as a teacher or trusted counselor; "The famous professor mentored him during his years in graduate school"; "She is a fine lecturer but she doesn't like mentoring"
a person who contributes to the fulfillment of a need or furtherance of an effort or purpose; "my invaluable assistant"; "they hired additional help to finish the work"
the act of communicating with a deity (especially as a petition or in adoration or contrition or thanksgiving); "the priest sank to his knees in prayer"