sumboulos denotes a person asked whether he has become the Lord's counselor.

The attested use names a person who could stand as the Lord's counselor, in a question that asks whether anyone has occupied that position.

1. A person who could advise the Lord · dominant

   In Romans 11:34, the nominative singular masculine form occurs in the question of who has become the Lord's counselor; the APB renders the clause, "or who has become his counselor?"

   Romans 11:34

In the Anselm Project Bible: In Romans 11:34, the APB presents the clause as "who has become his counselor?" This identifies the verse's presentation rather than a precise lexical equivalence.