Bible Verses About Self-Denial: Paul

But I fear none of these things, neither do I count my life more precious than myself, so that I may consummate my course and the ministry of the word which I received from the Lord Jesus, to testify the gospel of the grace of God.

For whereas I was free as to all, I made myself the servant of all, that I might gain the more.

But I chastise my body and bring it into subjection: lest perhaps, when I have preached to others, I myself should become a castaway.