1 Corinthians 9:1

[False or factional teachers coming to Corinth expected to be supported by the church according to the usual custom, but were hampered by the example of Paul, who had taken nothing for his services. To justify themselves and to discredit Paul, some of them appear to have gone so far as to deny Paul's appointment as an apostle, and to use his failure to demand wages as an evidence of their assertion. They argued that he knew he was not an apostle, and so forbore through shame to ask an apostle's pay. To settle this controversy, the Corinthians asked some such question as this: "Explain why, being an apostle, you did not take the wages due you as such." Paul begins his answer with four questions which show both surprise and indignation.] Am I not free? [All free men were entitled to wages for work done. Only slaves worked without compensation. See 1 Corinthians 9:19] Am I not an apostle? [and so more entitled to wages than an ordinary, less approved Christian teacher.] Have I not seen Jesus our Lord? [Apostles were to be witnesses of Jesus' resurrection (Acts 1:22; Acts 2:32; Acts 10:4), and so it was necessary that they should have seen the risen Christ. But Paul had seen more; on the way to Damascus, not only the risen, but the glorified, Christ had appeared to him. This was Paul's first proof of apostleship.] Are not ye my work in the Lord? [The presence of a church in Corinth, having in it Christians converted by Paul and living in the Lord, was the second proof of his apostleship. Such work could not be done by impostors-- Matthew 7:15-20]