1 Corinthians 9 : 1 Am I not an apostle? am I not free? have I not seen Jesus Christ our Lord? are not ye my work in the Lord? 2 If I be not an apostle unto others, yet doubtless I am to you: for the seal of mine apostleship are ye in the Lord.

He is reminding them that his authority had come from him being an apostle of Jesus Christ. He also, reminds them that his calling was a dramatic call when he actually came in contact with the Light of the world. Jesus Christ Himself, who had sent Paul to minister to these people. He goes on to remind them that they were Christians through his ministry an he says, you are my children in the Lord. The Jews in nearly every city had rejected Paul, but he had been accepted here at Corinth by these believers. The existence of the church in Corinth was evidence of Paul’s apostolic authenticity. Paul helps us to see here that sometimes people may question our beliefs so we have to stand strong in what we believe and and show them  how we know what we know and that is the word of  God.