A counsellor is an adviser or official who gives guidance. The word may describe a personal adviser, a king’s state counsellor, or a member of the Jewish Sanhedrin.
Scripture speaks of counsellors in relation to wisdom and royal government. The title is also applied to the Messiah in Isaiah 9:6, while Joseph of Arimathea is probably called a counsellor as a member of the Jewish Sanhedrin.
The term could describe both ordinary advisers and formal political or judicial officials.