And you were dead in your trespasses and sins, in which you formerly walked according to the course of this world, according to the prince of the power of the air, of the spirit that is now working in the sons of disobedience. Among them we too all formerly lived in the lusts of our flesh, indulging the desires of the flesh and of the mind, and were by nature children of wrath, even as the rest. Ephesians 2:1-3
But I have used none of these things. And I am not writing these things so that it will be done so in my case; for it would be better for me to die than have any man make my boast an empty one. For if I preach the gospel, I have nothing to boast of, for I am under compulsion; for woe is me if I do not preach the gospel.
1 Corinthians 9:15-27