1 Corinthians 1:12; 1 Corinthians 3:4; 1 Corinthians 9:1-2; 1 Corinthians 12:15-16; 1 Corinthians 13:2; 1 Corinthians 15:9-10

12 Now this I say , that every one of you saith , I am of Paul; and I of Apollos; and I of Cephas; and I of Christ.
4 For while one saith , I am of Paul; and another, I am of Apollos; are ye not carnal?
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.
15 If the foot shall say , Because I am not the hand, I am not of the body; is it therefore not of the body? 16 And if the ear shall say , Because I am not the eye, I am not of the body; is it therefore not of the body?
2 And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not charity, I am nothing.
9 For I am the least of the apostles, that am not meet to be called an apostle, because I persecuted the church of God. 10 But by the grace of God I am what I am : and his grace which was bestowed upon me was not in vain; but I laboured more abundantly than they all: yet not I, but the grace of God which was with me.