Have we not power to eat and to drink?
Have we not power х exousian (G1849)] - 'right,' lawful power; the same Greek as "liberty" (1 Corinthians 8:9). If you claim it, so may I. The "we" includes his colleagues. The Greek interrogative х mee (G3361) ouk (G3756)] expresses, 'You surely wont say (will you?) that we have not the power or right,' etc.
Eat and to drink? - without manual labouring (1 Corinthians 9:11; 1 Corinthians 9:13-14). Paul's not exercising this right was made a plea for insinuating that he was conscious he was no true apostle (2 Corinthians 12:13-16).