'Cup bearer' in the Bible

It may be Jehovah your God will hear all the words of the chief cupbearer with which his master the king of Assyria has sent to reproach the living God, and will rebuke the words which Jehovah your God has heard. And you shall lift up prayer for the rest who are left.

And the chief cupbearer returned and found the king of Assyria warring against Libnah, for he had heard that he had departed from Lachish.