1 Corinthians 9:1-2, 4-6

Am I not free? am I not an apostle? have I not seen Jesus our Lord? are not ye my work in the Lord? If to others I am not an apostle, yet at least I am to you; for the seal of mine apostleship are ye in the Lord.

Have we no right to eat and to drink? Have we no right to lead about a wife that is a believer, even as the rest of the apostles, and the brethren of the Lord, and Cephas? Or I only and Barnabas, have we not a right to forbear working?