Job 9:21  Though I were perfect,

                   yet would I not know my soul:

                                       I would despise my life.

1 Cor  15:35  But some man will say, How are the dead raised up? and with what body do they come?

1 Cor  15:36  Thou fool, that which thou sowest is not quickened, except it die:

Note:  Anybody glorying, boasting about themselves, Paul would call them a "Fool", including himself. Paul perceived that man was imaging a magnificent body he would be raised with..

By calling him a "Fool" to his face, that was Paul's  way of  telling him to knock the S___ off,....with just one word.  It is written: