I Corinthians 9:1-7

Am I not an apostle? Am I not free? Have I not seen Jesus Christ our Lord? Are you not my work in the Lord? If I am not an apostle to others, yet doubtless I am to you. For you are the seal of my apostleship in the Lord. My defense to those who examine me is this: Do we have no right to eat and drink? Do we have no right to take along a believing wife, as do also the other apostles, the brothers of the Lord, and Cephas? Or is it only Barnabas and I who have no right to refrain from working? Who ever goes to war at his own expense? Who plants a vineyard and does not eat of its fruit? Or who tends a flock and does not drink of the milk of the flock?